Tootfinder

Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter
Jian-Qi Liu, Yan-Hong Yao, Yan Su, Jia-Wei Wu
https://arxiv.org/abs/2507.16147

Observational constraints on phenomenological emergent dark energy and barotropic dark matter characterized by a constant equation of state parameter
While cold dark matter is widely supported by a range of cosmological observations, it encounters several difficulties at smaller scales. These issues have prompted the investigation of various alternative dark matter candidates, leaving the question "What is dark matter?" still open. In this work, we propose a new cosmological model that considers dark matter as a barotropic fluid with a constant equation of state parameter and interprets dark energy as the phenomenological emergent dark energ…

From Logic to Language: A Trust Index for Problem Solving with LLMs
Tehseen Rug, Felix B\"ohmer, Tessa Pfattheicher
https://arxiv.org/abs/2507.16028 h…

From Logic to Language: A Trust Index for Problem Solving with LLMs
Classical computation, grounded in formal, logical systems, has been the engine of technological progress for decades, excelling at problems that can be described with unambiguous rules. This paradigm, however, leaves a vast ocean of human problems -- those characterized by ambiguity, dynamic environments, and subjective context -- largely untouched. The advent of Large Language Models (LLMs) represents a fundamental shift, enabling computational systems to engage with this previously inaccessi…

Thermal operations from informational equilibrium
Seok Hyung Lie, Jeongrak Son, Paul Boes, Nelly H. Y. Ng, Henrik Wilming
https://arxiv.org/abs/2507.16637 …

Thermal operations from informational equilibrium
Thermal operations are quantum channels that have taken a prominent role in deriving fundamental thermodynamic limitations in quantum systems. We show that these channels are uniquely characterized by a purely quantum information theoretic property: They admit a dilation into a unitary process that leaves the environment invariant when applied to the equilibrium state. In other words, they are the only channels that preserve equilibrium between system and environment. Extending this perspective…

CoPlanner: An Interactive Motion Planner with Contingency-Aware Diffusion for Autonomous Driving
Ruiguo Zhong, Ruoyu Yao, Pei Liu, Xiaolong Chen, Rui Yang, Jun Ma
https://arxiv.org/abs/2509.17080

CoPlanner: An Interactive Motion Planner with Contingency-Aware Diffusion for Autonomous Driving
Accurate trajectory prediction and motion planning are crucial for autonomous driving systems to navigate safely in complex, interactive environments characterized by multimodal uncertainties. However, current generation-then-evaluation frameworks typically construct multiple plausible trajectory hypotheses but ultimately adopt a single most likely outcome, leading to overconfident decisions and a lack of fallback strategies that are vital for safety in rare but critical scenarios. Moreover, th…

orb-QFL: Orbital Quantum Federated Learning
Dev Gurung, Shiva Raj Pokhrel
https://arxiv.org/abs/2509.16505 https://arxiv.org/pdf/2509.16505

orb-QFL: Orbital Quantum Federated Learning
Recent breakthroughs in quantum computing present transformative opportunities for advancing Federated Learning (FL), particularly in non-terrestrial environments characterized by stringent communication and coordination constraints. In this study, we propose orbital QFL, termed orb-QFL, a novel quantum-assisted Federated Learning framework tailored for Low Earth Orbit (LEO) satellite constellations. Distinct from conventional FL paradigms, termed orb-QFL operates without centralized servers or…

Multifield Cosmology and the Dark Universe
Lilia Anguelova
https://arxiv.org/abs/2509.17179 https://arxiv.org/pdf/2509.17179…

Multifield Cosmology and the Dark Universe
Multifield models, arising from multiple scalars interacting with gravity, provide a rich theoretical framework for addressing fundamental problems in modern cosmology. A key role in this regard is played by the so called rapid turn regime, which is characterized by background solutions with strongly non-geodesic field-space trajectories. We review the implications of this regime for a number of problems relevant for cosmological inflation, dark matter and dark energy. We focus, in more detail,…

Tracing the Techno-Supremacy Doctrine: A Critical Discourse Analysis of the AI Executive Elite
H\'ector P\'erez-Urbina
https://arxiv.org/abs/2509.18079 https://

Tracing the Techno-Supremacy Doctrine: A Critical Discourse Analysis of the AI Executive Elite
This paper critically analyzes the discourse of the 'AI executive elite,' a group of highly influential individuals shaping the way AI is funded, developed, and deployed worldwide. The primary objective is to examine the presence and dynamics of the 'Techno-Supremacy Doctrine' (TSD), a term introduced in this study to describe a belief system characterized by an excessive trust in technology's alleged inherent superiority in solving complex societal problems. This study integrates quantitative …

On tested Bousfield-Friedlander localizations
Niall Taggart
https://arxiv.org/abs/2507.17321 https://arxiv.org/pdf/2507.17321

On tested Bousfield-Friedlander localizations
We demonstrate that a Bousfield-Friedlander localization with a set of test morphisms in the sense introduced by Bandklayder, Bergner, Griffiths, Johnson, and Santhanam can also be characterized as a left Bousfield localization at the set of test morphisms. This viewpoint enables us to establish a homogeneous model structure associated with any calculus arising from a Bousfield-Friedlander localization of this form. As a corollary, we show that homogeneous functors in discrete calculus coincide…

Two-dimensional classical superintegrable systems: polynomial algebra of integrals
A. M. Escobar-Ruiz, R. Azuaje, J. C. Gordiano
https://arxiv.org/abs/2506.17519

Two-dimensional classical superintegrable systems: polynomial algebra of integrals
In this work, we investigate generic classical two-dimensional (2D) superintegrable Hamiltonian systems H, characterized by the existence of three functionally independent integrals of motion (I_0=H,I_1,I_2). Our main result, formulated and proved as a theorem, establishes that the set (I_0,I_1,I_2,I_12={I_1,I_2}) generates a four-dimensional polynomial algebra under the Poisson bracket. Unlike previous studies, this study describes a construction that neither depends on the additive separabili…

A New Subclass of Carbon-Enhanced Metal-Poor Stars at Extremely Low Metallicity
Young Sun Lee, Timothy C. Beers, Yutaka Hirai, Jihye Hong, Miji Jeong, Changmin Kim, Young Kwang Kim
https://arxiv.org/abs/2509.16510

A New Subclass of Carbon-Enhanced Metal-Poor Stars at Extremely Low Metallicity
We report the discovery of a new subclass of carbon-enhanced metal-poor (CEMP) stars, characterized by high absolute carbon abundances (A(C) > 7.39) and extremely low metallicity ([Fe/H] $<=$ -3.1) but notably lacking enhancements in neutron-capture elements, thus falling under the CEMP-no category. This population emerged from a detailed analysis of low-resolution spectroscopic data obtained from the Sloan Digital Sky Survey (SDSS) and the Large Sky Area Multi-Object Fiber Spectroscopic Telesc…

Shadows from thin accretion disks of parametrized black hole solutions
Gonzalo J. Olmo, Jo\~ao Lu\'is Rosa, Diego Rubiera-Garcia, Alejandro Rueda, Diego S\'aez-Chill\'on G\'omez
https://arxiv.org/abs/2507.16580

Shadows from thin accretion disks of parametrized black hole solutions
We discuss the optical appearance from thin accretion disks in parametrized black holes, namely, solutions characterized by an arbitrarily large number of parameters without any regards to the theory of the gravitational and matter fields they come from. More precisely, we consider the leading-order terms of the spherically symmetric Johanssen-Psaltis (JP) and Konoplya-Zhidenko (KZ) parametrizations after imposing constraints from asymptotic flatness and solar system observations. Furthermore, …

Detachment limited interlayer transport processes during SrTiO3 pulsed laser epitaxy
Jeffrey G. Ulbrandt, Xiaozhi Zhang, Randall L. Headrick
https://arxiv.org/abs/2509.19181 htt…

Detachment limited interlayer transport processes during SrTiO3 pulsed laser epitaxy
Pulsed laser epitaxial growth is characterized by high instantaneous deposition rates that leads to the nucleation of transient islands, both on surface terraces, and on top of stable islands formed during previous deposition pulses. We report results from combined in-situ X-ray reflectivity and kinetic Monte Carlo (kMC) simulations. Specular reflectivity monitors interlayer transport, while diffuse scattering reveals the evolution of in-plane length scales, both during the recovery time betwee…

Fast Feeder Reconfiguration via Mesh Adaptive Direct Search in Black-Box Distribution System Environments
Junyuan Zheng, Wenlong Shi, Zhaoyu Wang
https://arxiv.org/abs/2507.16027 …

Fast Feeder Reconfiguration via Mesh Adaptive Direct Search in Black-Box Distribution System Environments
Feeder reconfiguration is a critical operational strategy in power distribution systems. However, existing optimization approaches typically rely on explicit mathematical formulations and analytical models, which are often infeasible in practical utility environments characterized by heterogeneous, proprietary, and black-box simulation modules. To address this challenge, this paper proposes a fast feeder reconfiguration framework based on Mesh Adaptive Direct Search (MADS). The proposed approac…

A statistical complexity measure can differentiate Go/NoGo trials during a visual-motor task using human electroencephalogram data
Francisco Leandro P. Carlos, Maria Carla Navas, \'Icaro Rodolfo Soares Coelho Da Paz, Helena Bordini de Lucas, Maciel-Monteiro Ubirakitan, Marcelo Cairr\~ao Ara\'ujo Rodrigues, Moises Aguilar Domingo, Eva Herrera-Guti\'errez, Osvaldo A. Rosso, Luz Bavassi, Fernanda Selingardi Matias

A statistical complexity measure can differentiate Go/NoGo trials during a visual-motor task using human electroencephalogram data
Complexity is a ubiquitous concept in contemporary science and everyday life. A complex dynamical system is usually characterized by a blend of order and disorder, as well as emergent phenomena that often span multiple temporal and spatial scales. The information processes related to different cognitive processes in the brain can be studied in light of statistical differences based on complexity measures of the electrophysiological time series from different trial types. Recently, it has been d…

Unbeatable imitation of a friend
Masahiko Ueda
https://arxiv.org/abs/2507.16221 https://arxiv.org/pdf/2507.16221

Unbeatable imitation of a friend
Imitation sometimes achieves success in multi-agent situations even though it is very simple. In game theory, success of imitation has been characterized by unbeatability against other agents. Previous studies specified conditions under which imitation is unbeatable in repeated games, and clarified that the existence of unbeatable imitation is strongly related to the existence of payoff-controlling strategies, called zero-determinant strategies. However, the previous studies mainly focused on `…

Rough Fabry-Perot cavity: a vastly multi-scale numerical problem
Tetiana Slipchenko, Jaime Abad-arredondo, Antonio Consoli, Francisco J Garc\'ia Vidal, Antonio I Fern\'andez-dom\'inguez, Pedro David Garc\'ia, Cefe L\'opez
https://arxiv.org/abs/2507.16607

Rough Fabry-Perot cavity: a vastly multi-scale numerical problem
A commercial Fabry-Perot laser diode is characterized by highly disproportionate dimensions, which poses a significant numerical challenge, even for state-of-the-art tools. This challenge is exacerbated when one of the cavity mirrors is rough-ened, as is the case when fabricating random laser diodes. Such a system involves length scales from several hundred mi-crometres (length) to a few nanometres (roughness) all of which are relevant when studying optical properties in the visi-ble. While inv…

Perpendicular rod wake/aerofoil interaction: microphone array and TR-PIV insights via SPOD and beamforming analysis
Filipe Ramos do Amaral, Marios Ioannis Spiropoulos, Florent Margnat, David Marx, Vincent Valeu, Peter Jordan
https://arxiv.org/abs/2507.16664

Perpendicular rod wake/aerofoil interaction: microphone array and TR-PIV insights via SPOD and beamforming analysis
This paper investigates the acoustic and velocity fields due to a circular rod and an aerofoil placed in the wake of, and perpendicular to, a rod. Simultaneous measurements were conducted using a microphone array and time-resolved particle image velocimetry (TR-PIV). The interaction was characterized through acoustic spectra and the coherence between microphone signals and the three velocity components. Coherent structures were identified with Spectral Proper Orthogonal Decomposition (SPOD) usi…

Mapping The Invisible Internet: Framework and Dataset
Siddique Abubakr Muntaka, Jacques Bou Abdo, Kemi Akanbi, Sunkanmi Oluwadare, Faiza Hussein, Oliver Konyo, Michael Asante
https://arxiv.org/abs/2506.18159

Mapping The Invisible Internet: Framework and Dataset
This article presents a novel dataset focusing on the network layer of the Invisible Internet Project (I2P), where prior research has predominantly examined application layers like the dark web. Data was collected through the SWARM- I2P framework, deploying I2P routers as mapping agents, utilizing dynamic port mapping (30000-50000 range). The dataset documents over 50,000 nodes, including 2,077 FastSet nodes and 2,331 high-capacity nodes characterized by bandwidth, latency (mean 121.21ms +- 48.…

Formation of vacuum state and delta-shock in the solution of two-dimensional Riemann problem for zero pressure gas dynamics
Anamika Pandey, T. Raja Sekhar
https://arxiv.org/abs/2507.17213

Formation of vacuum state and delta-shock in the solution of two-dimensional Riemann problem for zero pressure gas dynamics
In this article, we investigate the two-dimensional pressureless Euler equations with three constant Riemann initial data. Our primary focus is on the wave interactions involving contact discontinuities and delta shocks. A distinguishing feature of the solution is the emergence of a delta shock wave which is characterized by a Dirac delta function appearing in both the density and internal energy variables. By exploiting generalized characteristic analysis, nine topologically distinct solution …

Dichotomy for the Hausdorff dimension of nonergodic directions on translation surfaces
Yuming Wei
https://arxiv.org/abs/2507.15870 https://

Dichotomy for the Hausdorff dimension of nonergodic directions on translation surfaces
We study the ergodic properties of the translation surface $X_{λ,μ}$ formed by gluing two flat tori along a slit with holonomy $(λ,μ) \in \mathbb{R}^2$. Extending the dichotomy result of Cheung, Hubert, and Masur for the case $μ= 0$, we prove the following: for slits not parallel to any absolute homology class, the Hausdorff dimension of the set of nonergodic directions is either $0$ or $\frac{1}{2}$. This dichotomy is completely characterized by the Pérez-Marco condition expressed in ter…

Unconventional charge density wave in Kagome metal BaFe2Al9
Liucheng Chen, Mingwei Ma, Xiaohui Yu, Fang Hong
https://arxiv.org/abs/2507.16325 https://

Unconventional charge density wave in Kagome metal BaFe2Al9
The charge density wave (CDW) is a macroscopic quantum state characterized by long-range lattice distortion and modulated charge density. Conventionally, CDWs compete with other electronic orders (e.g. superconductivity) and are suppressed under hydrostatic pressure. Intriguingly, the Kagome-variant metal BaFe2Al9, crystallized in a three-dimensional structure, exhibits pressure-enhanced CDW ordering, where the transition temperature (TCDW) rises from ~110 K to room temperature near 3.6 GPa. Th…

CFP: DEADLINE EXTENDED: EMoDiR Panels "The Devil and Dissent: Early Modern Perspectives," RSA 72nd Annual Meeting, San Francisco (February 19-21, 2026)
https://ift.tt/EiL5bvr
Digitisation, Orphan Works & Copyright: New Resource for the GLAM sector CREATe, the RCUK…
via Input 4 RELCFP

Wetting and Pattern Formation in Non-Reciprocal Ternary Phase Separation
Xiao Ma, Michael E. Cates
https://arxiv.org/abs/2506.18702 https://

Wetting and Pattern Formation in Non-Reciprocal Ternary Phase Separation
Non-reciprocal interactions are among the simplest mechanisms that drive a physical system out of thermal equilibrium, leading to novel phenomena such as oscillatory pattern formation. In this paper, we introduce a ternary phase separation model, with non-reciprocal interactions between two of the three phases and a spectator phase that mimics a boundary. Through numerical simulations, we uncover three distinct phase behaviours: a quasi-static regime, characterized by well-defined non-equilibri…

One-shot Embroidery Customization via Contrastive LoRA Modulation
Jun Ma, Qian He, Gaofeng He, Huang Chen, Chen Liu, Xiaogang Jin, Huamin Wang
https://arxiv.org/abs/2509.18948 h…

Uniqueness of Maximal Inscribed Parabolas and Minimal Circumscribing Horocycles
Martin Lukarevski, Hans-Peter Schr\"ocker
https://arxiv.org/abs/2509.17415 https://

Uniqueness of Maximal Inscribed Parabolas and Minimal Circumscribing Horocycles
We prove existence of three unique ``exparabolas'' to a triangle. Each of these parabolas is internally tangent to one edge and the two other sides. Among all like parabolas, it is characterized by having maximal parameter. We use this result to prove a more general uniqueness statement on maximal parabolas into a convex point set. In similar spirit, we demonstrate uniqueness of minimal enclosing horocycles in hyperbolic geometry, provided the enclosed set is sufficiently small.

Performance of a Large-Volume Cryogenic Pure CsI Detector for CE{\nu}NS and Low-Energy Rare-Event Searches
Chen'guang Su, Lingquan Kong, Qian Liu, Shi Chen, Wenqian Huang, Kimiya Moharrami, Yangheng Zheng, Jin Li
https://arxiv.org/abs/2509.17528

Performance of a Large-Volume Cryogenic Pure CsI Detector for CEνNS and Low-Energy Rare-Event Searches
A cryogenic detector system based on two 3.3 kg high-purity CsI crystals was developed and characterized at approximately 95 K. Each wedge-shaped crystal was coupled to dual-ended 3-inch photomultiplier tubes (PMTs) for scintillation readout. The measured light yields were $28.7 \pm 0.9$ and $29.3 \pm 1.0$ photoelectrons per keV electron-equivalent (PE/keV$_{ee}$) for the two crystals, with corresponding energy resolutions of 7.2 \% and 7.7 \% (FWHM) at 59.6 keV. The detector demonstrated excel…

Imaging nuclear shape through anisotropic and radial flow in high-energy heavy-ion collisions
The STAR Collaboration
https://arxiv.org/abs/2506.17785 https…

Imaging nuclear shape through anisotropic and radial flow in high-energy heavy-ion collisions
Most atomic nuclei exhibit ellipsoidal shapes characterized by quadrupole deformation $β_2$ and triaxiality $γ$, and sometimes even a pear-like octupole deformation $β_3$. The STAR experiment introduced a new "imaging-by-smashing" technique [arXiv:2401.06625, arXiv:2501.16071] to image the nuclear global shape by colliding nuclei at ultra-relativistic speeds and analyzing outgoing debris. Features of nuclear shape manifest in collective observables like anisotropic flow $v_n$ and radial flow…

Identification and Characterization of a New Disruption Regime in ADITYA-U Tokamak
Soumitra Banerjee, Harshita Raj, Sk Injamul Hoque, Komal Yadav, Sharvil Patel, Ankit Kumar, Kaushlender Singh, Ashok Kumawat, Bharat Hegde, Subhojit Bose, Priyanka Verma, Kumudini Tahiliani, Asha Adhiya, Manoj Kumar, Rohit Kumar, Malay Bikash Chowdhuri, Nilam Ramaiya, Ananya Kundu, Suman Aich, Suman Dolui, K. A. Jadeja, K. M. Patel, Ankit Patel, Rakesh L. Tanna, Joydeep Ghosh

Identification and Characterization of a New Disruption Regime in ADITYA-U Tokamak
Disruptions continue to pose a significant challenge to the stable operation and future design of tokamak reactors. A comprehensive statistical investigation carried out on the ADITYA-U tokamak has led to the observation and characterization of a novel disruption regime. In contrast to the conventional Locked Mode Disruption (LMD), the newly identified disruption exhibits a distinctive two-phase evolution: an initial phase characterized by a steady rise in mode frequency with a nonlinearly satu…

High temperature superconductivity with giant pressure effect in 3D networks of boron doped ultra-thin carbon nanotubes in the pores of ZSM-5 zeolite
Yibo Wang, Tsin Hei Koo, Runqing Huang, Yat Hei Ng, Timoth\'ee Tianyu Lortz, Ting Zhang, Wai Ming Chan, Yuxiao Hou, Jie Pan, Rolf Lortz, Ning Wan, Ping Sheng
https://arxiv.org/abs/2509.19…

High temperature superconductivity with giant pressure effect in 3D networks of boron doped ultra-thin carbon nanotubes in the pores of ZSM-5 zeolite
We have fabricated three-dimensional (3D) networks of ultrathin carbon nanotubes (CNTs) within the ~5-Angstrom diameter pores of zeolite ZSM-5 crystals using the chemical vapour deposition (CVD) process. The 1D electronic characteristics of ultrathin CNTs are characterized by van Hove singularities in the density of states. Boron doping was strategically employed to tune the Fermi energy near a van Hove singularity, which is supported by extensive ab-initio calculations, while the 3D network st…

An Axiomatization of the Random Priority Rule
Christian Basteck
https://arxiv.org/abs/2506.17997 https://arxiv.org/pdf/2506.17997

An Axiomatization of the Random Priority Rule
We study the problem of assigning indivisible objects to agents where each is to receive at most one. To ensure fairness in the absence of monetary compensation, we consider random assignments. Random Priority, also known as Random Serial Dictatorship, is characterized by equal-treatment-of-equals, ex-post efficiency and probabilistic (Maskin) monotonicity -- whenever preferences change so that a given deterministic assignment is ranked weakly higher by all agents, the probability of that assig…

On Strongly Convex Sets and Farthest Distance Functions
Juan Enrique Mart\'inez-Legaz
https://arxiv.org/abs/2507.15053 https://ar…

On Strongly Convex Sets and Farthest Distance Functions
A polarity notion for sets in a Banach space is introduced in such a way that the second polar of a set coincides with the smallest strongly convex set with respect to R that contains it. Strongly convex sets are characterized in terms of their associated farthest distance functions, and farthest distance functions associated with strongly convex sets are characterized, too.

Chiral Color Code : Single-shot error correction for exotic topological order
Dongjin Lee, Beni Yoshida
https://arxiv.org/abs/2509.18324 https://arxiv.org/…

A heterogeneous lithosphere on Venus
I. Romeo, A. Jimenez Diaz, M. Mendiburu Elicabe, I. Egea Gonzalez, R. M. Hahn, P. K. Byrne, J. F. Kirby, J. Alvarez Lozano, J. Ruiz
https://arxiv.org/abs/2506.18568

A heterogeneous lithosphere on Venus
Venus is 95% the size of Earth and probably has a similar composition and internal energy, but the geodynamical mechanism governing its internal thermal evolution remains controversial. Much of the planet surface (77%) is covered by volcanic plains, characterized by basaltic flood lavas, some of which emanate from volcanoes whereas others have no identifiable sources. Here we show that the volcanic plains contain three provinces with statistically different properties. Apart from the plains aro…

Identifying the sources of noise synergy and redundancy in the feed-forward loop motif
Mintu Nandi, Sudip Chattopadhyay, Suman K Banik
https://arxiv.org/abs/2506.18620

Identifying the sources of noise synergy and redundancy in the feed-forward loop motif
The propagation of noise through parallel regulatory pathways is a prominent feature of feed-forward loops in genetic networks. Although the contributions of the direct and indirect regulatory pathways of feed-forward loops to output variability have been well characterized, the impact of their joint action arising from their shared input and output remains poorly understood. Here, we identify an additional component of noise that emerges specifically from this convergent nature of the pathways…

Characterizations of certain matroids by maximizing valuative invariants
Joseph E. Bonin
https://arxiv.org/abs/2507.14720 https://arx…

Characterizations of certain matroids by maximizing valuative invariants
Luis Ferroni and Alex Fink recently introduced a polytope of all unlabeled matroids of rank $r$ on $n$ elements, and they showed that the vertices of this polytope come from matroids that can be characterized by maximizing a sequence of valuative invariants. We prove that a number of the matroids that they conjectured to yield vertices indeed do (these include cycle matroids of complete graphs, projective geometries, and Dowling geometries), and we give additional examples (including truncation…

Foundation Models for Cross-Domain EEG Analysis Application: A Survey
Hongqi Li, Yitong Chen, Yujuan Wang, Weihang Ni, Haodong Zhang
https://arxiv.org/abs/2508.15716 https://

Foundation Models for Cross-Domain EEG Analysis Application: A Survey
Electroencephalography (EEG) analysis stands at the forefront of neuroscience and artificial intelligence research, where foundation models are reshaping the traditional EEG analysis paradigm by leveraging their powerful representational capacity and cross-modal generalization. However, the rapid proliferation of these techniques has led to a fragmented research landscape, characterized by diverse model roles, inconsistent architectures, and a lack of systematic categorization. To bridge this g…

Largeness and generalized t-henselianity
Will Johnson
https://arxiv.org/abs/2508.15362 https://arxiv.org/pdf/2508.15362

Largeness and generalized t-henselianity
Let $K$ be a countable field. Then $K$ is large in the sense of Pop if and only if it admits a field topology which is "generalized t-henselian" (gt-henselian) in the sense of Dittmann, Walsberg, and Ye, meaning that the implicit function theorem holds for polynomials. Moreover, the étale open topology can be characterized in terms of the gt-henselian topologies on $K$: a subset $U \subseteq K^n$ is open in the étale open topology if and only if it is open with respect to every gt-henselian t…

RX Gru: a short-period pre-main-sequence eclipsing binary with a distant circumbinary companion
F. Marcadon, A. Moharana, T. Pawar, G. Pawar, K. G. He{\l}miniak, J. P. Marques, M. Konacki
https://arxiv.org/abs/2509.17011

RX Gru: a short-period pre-main-sequence eclipsing binary with a distant circumbinary companion
We report the discovery of a new short-period pre-main-sequence eclipsing binary, RX Gru, orbited by a distant circumbinary companion. We characterized the system by analysing the photometric observations from the Solaris network, the Transiting Exoplanet Survey Satellite, and the Super Wide Angle Search for Planets survey, combined with the radial velocities from four high-resolution spectrographs: HARPS, FEROS, CHIRON, and HRS. We derived the parameters of the eclipsing components, which are …

Arbitrarily long-lived quasinormal modes of proper-time flow black holes
Milena Skvortsova
https://arxiv.org/abs/2509.18061 https://arxiv.org/pdf/2509.1806…

Arbitrarily long-lived quasinormal modes of proper-time flow black holes
We investigate the quasinormal modes (QNMs) of a massive scalar field in the background of a regular black hole arising from the proper-time flow in asymptotically safe gravity. This quantum-corrected geometry, characterized by a deformation parameter q, smoothly interpolates between a near-extremal regular black hole and the Schwarzschild solution. Employing both the WKB approximation with Padé resummation and time-domain integration, we compute the complex frequencies for various values of t…

6-DoF Object Tracking with Event-based Optical Flow and Frames
Zhichao Li, Arren Glover, Chiara Bartolozzi, Lorenzo Natale
https://arxiv.org/abs/2508.14776 https://

6-DoF Object Tracking with Event-based Optical Flow and Frames
Tracking the position and orientation of objects in space (i.e., in 6-DoF) in real time is a fundamental problem in robotics for environment interaction. It becomes more challenging when objects move at high-speed due to frame rate limitations in conventional cameras and motion blur. Event cameras are characterized by high temporal resolution, low latency and high dynamic range, that can potentially overcome the impacts of motion blur. Traditional RGB cameras provide rich visual information tha…

Maximum multinomial likelihood estimation in compound mixture model with application to malaria study
Zhaoyang Tian, Kun Liang, Pengfei Li
https://arxiv.org/abs/2507.15623

Maximum multinomial likelihood estimation in compound mixture model with application to malaria study
Malaria can be diagnosed by the presence of parasites and symptoms (usually fever) due to the parasites. In endemic areas, however, an individual may have fever attributable either to malaria or to other causes. Thus, the parasite level of an individual with fever follows a two-component mixture, with the two components corresponding to malaria and nonmalaria individuals. Furthermore, the parasite levels of nonmalaria individuals can be characterized as a mixture of a zero component and a posit…

Ranks of Checkered Pattern Matrices with Applications to Information Embedding and Retrieving
Hideo Hirose
https://arxiv.org/abs/2509.15605 https://arxiv.o…

Ranks of Checkered Pattern Matrices with Applications to Information Embedding and Retrieving
Checkered patterns are characterized by their square structure and the use of only two distinct colors. These colors are typically represented by two types of numerical sets: {1,0} and {1,-1}. Matrices based on {1,0} may seem identical to those based on {1,-1} when forming checkered patterns because the only difference is that the numbers 0 are changed to -1. However, these two kinds of matrices are completely different in a mathematical sense because a matrix using {1,0} has a rank of 2 and a …

Broadband radio study of the supernova remnant Kes 73
S. Loru, A. Ingallinera, A. Pellizzoni, E. Egron, C. Bordiu, G. Umana, C. Trigilio, F. Bufano, M. N. Iacolina, M. Marongiu, S. Mulas, C. Buemi, F. Cavallaro, P. Leto, A. Melis, P. Reich, W. Reich, S. Riggi, A. C. Ruggeri
https://arxiv.org/abs/2509.15712

Broadband radio study of the supernova remnant Kes 73
Strong shocks occurring in supernova remnants (SNRs), and their interaction with an often anisotropic surrounding medium, make SNRs ideal laboratories for studying the production and acceleration of cosmic rays (CRs). Due to their complex morphology and phenomenology, different CR populations are expected to exist throughout the remnants, each characterized by its own energy spectrum. A comprehensive understanding of particle acceleration mechanisms and energetics in SNRs requires spatially res…

Generalized factorials characterized by Dirichlet convolution
Wanli Ma
https://arxiv.org/abs/2509.13354 https://arxiv.org/pdf/2509.13354

Generalized factorials characterized by Dirichlet convolution
We extend A.B. Mingarelli's method for constructing generalized factorials. Our extension uses a pair of arithmetic functions $(x, y)$, where $x$ is superadditive. When $x$ is the identity function, our generalized factorial reduces to Mingarelli's. A result on the irrationality of the Euler constant within this framework is given. Using Dirichlet convolution, we characterize when two pairs $(α, β)$ and $(x, y)$ generate the same factorials.

Description using equilibrium temperature in the canonical ensemble within the framework of the Tsallis statistics with the conventional expectation value
Masamichi Ishihara
https://arxiv.org/abs/2507.15258

Description using equilibrium temperature in the canonical ensemble within the framework of the Tsallis statistics with the conventional expectation value
We studied the thermodynamic quantities and the probability distribution, expressing the probability distribution as a function of the energy, in the canonical ensemble within the framework of the Tsallis statistics, which is characterized by the entropic parameter $q$, with the conventional expectation value. We treat the power-law-like distribution. The equilibrium temperature, which is often called the physical temperature, is employed to describe the probability distribution. The Tsallis st…

Series D, Episode 05 - Animals
TARRANT: Hmm, smells lovely.
VILA: No, it doesn't. It's disgusting.
AVON: Well, somebody has to go down and you are the one with the delicate touch, Vila.
TARRANT: Magic hands. You've often said so yourself.
https://blake.torpidity.net/m/405/140

New Frontiers in the Study of Magnetic Massive Stars with the Habitable Worlds Observatory
Alexandre David-Uraz (Central Michigan University, Mount Pleasant, Michigan, USA), V\'eronique Petit (University of Delaware, Newark, Delaware, USA), Coralie Neiner (LESIA, Paris Observatory, PSL University, CNRS, Sorbonne University, Paris-Cit\'e University, Meudon, France), Jean-Claude Bouret (Aix-Marseille University, CNRS, CNES, LAM, Marseille, France), Ya\"el Naz\'e (Groupe …

New Frontiers in the Study of Magnetic Massive Stars with the Habitable Worlds Observatory
High-mass stars are notable for several reasons: they are characterized by strong winds, which inject momentum and enriched material into their surroundings, and die spectacularly as supernovae, leaving behind compact remnants and heavy elements (such as those that make life on Earth possible). Despite their relative rarity, they play a disproportionate role in the evolution of the galaxies that host them, and likely also played a significant role in the early days of the Universe. A subset ($\…

A new infinite-dimensional Linking theorem with application to a system of coupled Poisson equations
Ablanvi Songo, Fabrice Colin
https://arxiv.org/abs/2506.17563

A new infinite-dimensional Linking theorem with application to a system of coupled Poisson equations
Using the minimax technique from the critical point theory, which consists in constructing or transforming a suitable class of applications such that a critical value $c$ of a functional $f$ can be characterized as a minimax value over this class, we establish a new natural infinite-dimensional linking theorem for strongly indefinite functionals by using the $τ-$topology of Kryszewski and Szulkin. Our result is a generalization of the classical linking theorem \cite[Theorem 2.21]{Wi}. As an ap…

On the critical parameters of branching random walks
Daniela Bertacchi, Fabio Zucca
https://arxiv.org/abs/2507.14676 https://arxiv.or…

On the critical parameters of branching random walks
Given a discrete spatial structure $X$, we define continuous-time branching processes that model a population breeding and dying on $X$. These processes are usually called branching random walks. They are characterized by breeding rates $k_{xy}$ between sites (ruling the speed at which individuals at $x$ send children to $y$) and by the multiplicative speed parameter $λ$. Two critical parameters of interest are the global critical parameter $λ_w$, related to global survival, and the local cri…

Single-shot pulse retrieval of femtosecond bright squeezed vacuum
Yuval Kern, Ido Nisim, Michael Birk, Andrei Rasputnyi, Doron Behar, Zhaopin Chen, Ido Kaminer, Pavel Sidorenko, Oren Cohen, Michael Kr\"uger
https://arxiv.org/abs/2509.17746

Single-shot pulse retrieval of femtosecond bright squeezed vacuum
Bright squeezed vacuum (BSV) is an intense quantum state of light with zero mean electric field and huge photon number fluctuations, sufficiently intense to drive extreme nonlinear processes and imprint nonclassical statistics. However, the temporal structure of single BSV shots has not been fully characterized. Here, we retrieve the spectral and temporal pulse characteristics of a set of single-peak BSV shots. It is obtained by realizing a femtosecond BSV source at 1040 nm with a single spatia…

CFP: DEADLINE EXTENDED: EMoDiR Panels "The Devil and Dissent: Early Modern Perspectives," RSA 72nd Annual Meeting, San Francisco (February 19-21, 2026)
https://ift.tt/98OGfZ5
Digitisation, Orphan Works & Copyright: New Resource for the GLAM sector CREATe, the RCUK…
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"Odd" Toric Code in a tilted field: Higgs-confinement multicriticality, spontaneous self-duality symmetry breaking, and valence bond solids
Umberto Borla, Ayush De, Snir Gazit
https://arxiv.org/abs/2507.16523

"Odd" Toric Code in a tilted field: Higgs-confinement multicriticality, spontaneous self-duality symmetry breaking, and valence bond solids
We investigate the quantum phase diagram of an ``odd'' variant of the two-dimensional Ising Fradkin--Shenker model, characterized by a uniform background of static $e$ and $m$ charges. Using large-scale tensor network and exact diagonalization methods, we determine the topology of the phase diagram, identifying an ``odd'' deconfined phase, confinement- and Higgs-induced valence bond solids (VBS), and a trivial paramagnet. Most notably, we uncover an exotic multicritical point along the self-dua…

R-ConstraintBench: Evaluating LLMs on NP-Complete Scheduling
Raj Jain, Marc Wetter
https://arxiv.org/abs/2508.15204 https://arxiv.org/pdf/2508.15204…

R-ConstraintBench: Evaluating LLMs on NP-Complete Scheduling
Effective scheduling under tight resource, timing, and operational constraints underpins large-scale planning across sectors such as capital projects, manufacturing, logistics, and IT fleet transitions. However, the reliability of large language models (LLMs) when reasoning under high-constraint regimes is insufficiently characterized. To address this gap, we present R-ConstraintBench, a scalable framework that evaluates models on Resource-Constrained Project Scheduling Problems (RCPSP), an NP-…

Nonreciprocal plasmons in one-dimensional carbon nanostructures
\'Alvaro Rodr\'iguez Echarri, F. Javier Garc\'ia de Abajo, Joel D. Cox
https://arxiv.org/abs/2509.16109

Nonreciprocal plasmons in one-dimensional carbon nanostructures
The directional control of light in miniaturized plasmonic waveguides holds appealing possibilities for emerging nanophotonic technologies, but is hindered by the intrinsic reciprocal optical response of conventional plasmonic materials. While the ability of graphene to sustain large electrical currents shows promise for nonreciprocal plasmonics, studies have been limited to extended samples characterized by linear electrical dispersion. Here, we theoretically explore quantum finite-size and no…

The Red and Yellow Hypergiants
Terry Jones
https://arxiv.org/abs/2507.15962 https://arxiv.org/pdf/2507.15962

The Red and Yellow Hypergiants
The red and yellow hypergiants are a rare and important phase in the evolution of the most massive stars that can reach the cool part of the HR Diagram. The hypergiant phase is commonly characterized by high, often episodic mass-loss rates and significant changes in spectral type, probably due to the formation of a pseudo photopsphere during a high mass-loss episode. Many of the yellow hypergiants are the immediate successors to the most luminous red supergiants, and often show evidence in thei…

CogniQ-H: A Soft Hierarchical Reinforcement Learning Paradigm for Automated Data Preparation
Jing Chang, Chang Liu, Jinbin Huang, Rui Mao, Jianbin Qin
https://arxiv.org/abs/2507.13710

CogniQ-H: A Soft Hierarchical Reinforcement Learning Paradigm for Automated Data Preparation
Data preparation is a foundational yet notoriously challenging component of the machine learning lifecycle, characterized by a vast combinatorial search space of potential operator sequences. While reinforcement learning (RL) offers a promising direction, existing approaches are inefficient as they fail to capture the structured, hierarchical nature of the problem. We argue that Hierarchical Reinforcement Learning (HRL), a paradigm that has been successful in other domains, provides a conceptua…

Designing Robots with, not for: A Co-Design Framework for Empowering Interactions in Forensic Psychiatry
Qiaoqiao Ren, Remko Proesmans, Arend Pissens, Lara Dehandschutter, William Denecker, Lotte Rouckhout, Joke Carrette, Peter Vanhopplinus, Tony Belpaeme, Francis wyffels
https://arxiv.org/abs/2507.14931

Designing Robots with, not for: A Co-Design Framework for Empowering Interactions in Forensic Psychiatry
Forensic mental health care involves the treatment of individuals with severe mental disorders who have committed violent offences. These settings are often characterized by high levels of bureaucracy, risk avoidance, and restricted autonomy. Patients frequently experience a profound loss of control over their lives, leading to heightened psychological stress-sometimes resulting in isolation as a safety measure. In this study, we explore how co-design can be used to collaboratively develop a co…

Lensing Fingerprints of Scalar Hair and Broken Symmetries via Three Semi-Analytical Methods
Ali \"Ovg\"un, Reggie C. Pantig
https://arxiv.org/abs/2507.16512

Lensing Fingerprints of Scalar Hair and Broken Symmetries via Three Semi-Analytical Methods
We present a detailed derivation of the weak-field deflection of light in the scalar hairy black hole spacetime with scalar charge $Q_s$ and bumblebee gravity black hole spacetime, characterized by a Lorentz-violating parameter $\ell$. Starting from the metric, we derive the photon orbit equation up to second order in the small parameters $M/b$, $Q_s$ or $\ell$. Then we derive the weak-field deflection angle via three independent semi-analytical techniques- (1) Homotopy-Perturbation Method, (2)…

Scrutinizing Fermionic Dark Matter in Scotogenic Model with Low Reheating Temperature
Abhishek Roy, Rameswar Sahu
https://arxiv.org/abs/2508.14726 https://…

Scrutinizing Fermionic Dark Matter in Scotogenic Model with Low Reheating Temperature
The scotogenic model provides a minimal and elegant framework that simultaneously explains neutrino masses and accommodates a viable dark matter (DM) candidate. In this work, we investigate the phenomenology of fermionic DM in the scotogenic model, with a particular emphasis on the effects of a non-standard cosmological history characterized by a low reheating temperature. We demonstrate that entropy injection from inflaton decay can significantly dilute the DM abundance, thereby relaxing the a…

Top- and bottom-heavy vertical velocity structures: physical modes of layered atmospheric models
Fiaz Ahmed, J. David Neelin
https://arxiv.org/abs/2509.15166 https://

Top- and bottom-heavy vertical velocity structures: physical modes of layered atmospheric models
Tropical East and West Pacific Oceans display differences in their vertical velocity (or omega) profiles. The East Pacific is characterized by bottom-heavy profiles, while the West Pacific is characterized by top-heavy profiles. Although inter-basin differences in the horizontal SST gradient are known to be important, physical reasons for why these omega structure variants exist are not fully understood. This question is addressed using a steady, linear model on an $f$-plane with $n$ atmospheri…

Peculiar Disk Substructures Associated with the Young Eruptive Star EX Lupi
Masayuki Yamaguchi, Hauyu Baobab Liu, Michihiro Takami, Pin-Gao Gu
https://arxiv.org/abs/2508.14367 h…

Peculiar Disk Substructures Associated with the Young Eruptive Star EX Lupi
Young eruptive stars such as EXors undergo dramatic accretion outbursts characterized by sudden optical brightenings, yet the underlying physical mechanism remains uncertain. We present high-resolution ALMA Band 3 and 4 continuum observations of EX Lupi, the prototypical EXor-type variable, reconstructed using super-resolution imaging with sparse modeling. Our images reveal, for the first time, two distinct substructures: a compact, crescent-shaped inner arc within 10 au of the star, and a narr…

Discovering correlations between metal foam thermal characteristics and non-Fourier behavior
Anna Feh\'er, D\'aniel Cseh, R\'obert Kov\'acs
https://arxiv.org/abs/2508.15340

Discovering correlations between metal foam thermal characteristics and non-Fourier behavior
Due to their low density and large specific surface area, metal foams are increasingly used as cellular materials that combine excellent structural and thermal properties. Their cellular structure makes them particularly suitable for use in heat exchangers, insulation, and fire protection layers. The heat transport that takes place within them is a complex phenomenon characterized by the simultaneous presence of heat conduction, heat transfer, and heat radiation, making their modeling a signifi…

Little Red Dots and their Progenitors from Direct Collapse Black Holes
Junehyoung Jeon, Boyuan Liu, Volker Bromm, Seiji Fujimoto, Anthony J. Taylor, Vasily Kokorev, Rebecca L. Larson, John Chisholm, Steven L. Finkelstein, Dale D. Kocevski
https://arxiv.org/abs/2508.14155

Little Red Dots and their Progenitors from Direct Collapse Black Holes
The James Webb Space Telescope (JWST) has discovered a new population of objects, the Little Red Dots (LRDs), characterized by V-shaped spectra indicative of strong breaks around the Balmer limit and compact morphology that gave them their name. A popular explanation is that they are a sub-population of active galactic nuclei/supermassive black holes (AGN/SMBHs) predominantly found in the high-redshift Universe ($z\gtrsim3$). Similarly, direct collapse black holes (DCBHs), theorized to form fro…

Temporal pattern generation with tunable repetition rate using semiconductor laser periodic dynamics
Apostolos Argyris
https://arxiv.org/abs/2506.18570 htt…

Temporal pattern generation with tunable repetition rate using semiconductor laser periodic dynamics
In this work, a long-cavity semiconductor laser subject to optical feedback is exploited to generate repetitive temporal patterns with enhanced intra-pattern sample diversity. Stable limit cycle dynamics characterized by multiple frequency harmonics are experimentally demonstrated by considering a 2 m external cavity with appropriate optical feedback conditions. This simple configuration can enable stable and continuous generation of periodic waveforms with a tunable repetition rate ranging fro…

CFP: DEADLINE EXTENDED: EMoDiR Panels "The Devil and Dissent: Early Modern Perspectives," RSA 72nd Annual Meeting, San Francisco (February 19-21, 2026) https://networks.h-net.org/group/announcements/20120930/cfp-d…

Bidirectional anisotropic solar energetic particle events observed by Solar Orbiter
Zheyi Ding, Robert F. Wimmer-Schweingruber, Yu Chen, Lingling Zhao, Alexander Kollhoff, Patrick K\"uhl, Liu Yang, Lars Berger, Verena Heidrich-Meisner, Javier Rodriguez-Pacheco, George C. Ho, Glenn M. Mason, Gang Li, Tom\'a\v{s} Form\'anek, Christopher J. Owen
https…

Bidirectional anisotropic solar energetic particle events observed by Solar Orbiter
Solar Energetic Particle (SEP) events are critical for understanding particle acceleration and transport in the heliosphere. While most SEP events involve outward streaming particles along open magnetic field lines, bidirectional events characterized by simultaneous sunward and anti-sunward particle flows offer unique insights into magnetic field topology and the interplay of multiple acceleration sources. We aim to investigate the origin and transport of energetic particles in two rare bidirec…

On an Abstraction of Lyapunov and Lagrange Stability
Michelangelo Bin, David Angeli
https://arxiv.org/abs/2507.15047 https://arxiv.or…

On an Abstraction of Lyapunov and Lagrange Stability
This paper studies a set-theoretic generalization of Lyapunov and Lagrange stability for abstract systems described by set-valued maps. Lyapunov stability is characterized as the property of inversely mapping filters to filters, Lagrange stability as that of mapping ideals to ideals. These abstract definitions unveil a deep duality between the two stability notions, enable a definition of global stability for abstract systems, and yield an agile generalization of the stability theorems for basi…

Dirac monopole magnets in non-Hermitian systems
Haiyang Yu, Tao Jiang, Li-Chen Zhao
https://arxiv.org/abs/2508.15186 https://arxiv.org/pdf/2508.15186

Dirac monopole magnets in non-Hermitian systems
We theoretically establish that non-Hermitian perturbations induce a topological transformation of point-like Dirac monopoles into extended monopole distributions, characterized by distinct charge configurations emergent from three distinct Berry connection forms. Using piecewise adiabatic evolution, we confirm the validity of these configurations through observations of complex geometric phases. Most critically, we find a quantitative relation $Δϕ_d = Δϕ_g$, which quantifies how cumulative…

Cold and fuzzy dark sector
Christian Capanelli, Elisa G. M. Ferreira, Evan McDonough
https://arxiv.org/abs/2509.15299 https://arxiv.org/pdf/2509.15299

Cold and fuzzy dark sector
We introduce the Fuzzy Dark Sector (FDS) scenario as a rich, interacting system and candidate for dark matter. This serves as a natural extension of the single-component, non-interacting Fuzzy Dark Matter (FDM) paradigm. Concretely, we consider an ultra-light Abelian-Higgs model, with interacting Higgs and dark photon degrees of freedom. We find that the transfer function, and hence imprint on the CMB and Large-Scale Structure (LSS), is characterized by a single characteristic scale of the inte…

Red Supergiants as Supernova Progenitors
Schuyler D. Van Dyk
https://arxiv.org/abs/2507.15973 https://arxiv.org/pdf/2507.15973…

Red Supergiants as Supernova Progenitors
The inevitable fate of massive stars in the initial mass range of ~8--30 M_{Sun} in the red supergiant (RSG) phase is a core-collapse supernova (SN) explosion, although some stars may collapse directly to a black hole. We know that this is the case, since RSGs have been directly identified and characterized for a number of supernovae (SNe) in pre-explosion archival optical and infrared images. RSGs likely all have some amount of circumstellar matter (CSM), through nominal mass loss, although ev…

LongSplat: Robust Unposed 3D Gaussian Splatting for Casual Long Videos
Chin-Yang Lin, Cheng Sun, Fu-En Yang, Min-Hung Chen, Yen-Yu Lin, Yu-Lun Liu
https://arxiv.org/abs/2508.14041

LongSplat: Robust Unposed 3D Gaussian Splatting for Casual Long Videos
LongSplat addresses critical challenges in novel view synthesis (NVS) from casually captured long videos characterized by irregular camera motion, unknown camera poses, and expansive scenes. Current methods often suffer from pose drift, inaccurate geometry initialization, and severe memory limitations. To address these issues, we introduce LongSplat, a robust unposed 3D Gaussian Splatting framework featuring: (1) Incremental Joint Optimization that concurrently optimizes camera poses and 3D Gau…

CFP: DEADLINE EXTENDED: EMoDiR Panels "The Devil and Dissent: Early Modern Perspectives," RSA 72nd Annual Meeting, San Francisco (February 19-21, 2026) https://networks.h-net.org/group/announcements/20120931/cfp-d…

On free boundary problems for the Atlas model
Rami Atar, Amarjit Budhiraja
https://arxiv.org/abs/2507.15479 https://arxiv.org/pdf/250…

On free boundary problems for the Atlas model
For $n\in\mathbb{N}$, let $\{X^n_i\}$ be an infinite collection of Brownian particles on the real line where the leftmost particle $\min_iX^n_i(t)$ is given a drift $n$, and let $μ^n_t=n^{-1}\sum_iδ_{X^n_i(t)}$, $t\ge0$ denote the normalized configuration measure. The case where the initial particle positions follow a Poisson point process on $[0,\infty)$ of intensity $nλ$, $λ>0$ was studied where it was shown that $μ^n_t$ converge, as $n\to\infty$, to a limit characterized by a Stefan pro…

Lifshitz Quantum Mechanics and Anisotropic Josephson Junction
Chong-Sun Chu, Alfian Gunawan
https://arxiv.org/abs/2507.14996 https://…

Lifshitz Quantum Mechanics and Anisotropic Josephson Junction
We consider quantum mechanics in spacetime with time anisotropy. Such Lifshitz quantum mechanics is characterized by a kinetic term with fractional derivatives. We show that, contrary to popular belief, local conservation of probability is respected when the probability current is properly identified. As an application we consider a Josephson Junction with an anisotropic insulating layer. We show that anisotropy affects the tunneling rate and can greatly enhance the working of Josephson Junctio…

Magnetoelastic Coupling-Driven Chiral Spin Textures: A Skyrmion-Antiskyrmion-Like Array
Gyungchoon Go, Se Kwon Kim
https://arxiv.org/abs/2509.15511 https://

Magnetoelastic Coupling-Driven Chiral Spin Textures: A Skyrmion-Antiskyrmion-Like Array
We theoretically demonstrate that sufficiently strong magnetoelastic coupling can change the ground state of otherwise uniform spin systems to chiral spin configurations. More specifically, we show that, a periodic array of chiral spin textures can spontaneously emerge in a two-dimensional ferromagnetic system on a substrate-even in the absence of Dzyaloshinskii-Moriya interaction. The resulting spin texture resembles a skyrmion-antiskyrmion lattice, characterized by alternating scalar spin chi…

Exact Relation Between Wehrl-R\'enyi Entropy and Many-Body Entanglement
Pengfei Zhang, Chen Xu, Peng Zhang
https://arxiv.org/abs/2509.16036 https://arx…

Exact Relation Between Wehrl-Rényi Entropy and Many-Body Entanglement
Quantum entanglement is key to understanding correlations and emergent phenomena in quantum many-body systems. For $N$ qubits (distinguishable spin-$1/2$ particles) in a pure quantum state, many-body entanglement can be characterized by the purity of the reduced density matrix of a subsystem, defined as the trace of the square of this reduced density matrix. Nevertheless, this approach depends on the choice of subsystem. In this letter, we establish an exact relation between the Wehrl-Rényi en…

Nonstrange and strange quark matter at finite temperature within modified NJL model and protoquark stars
Wen-Li Yuan, Nobutoshi Yasutake, Renxin Xu
https://arxiv.org/abs/2508.14795

Nonstrange and strange quark matter at finite temperature within modified NJL model and protoquark stars
We extend the modified Nambu-Jona-Lasinio (NJL) model -- incorporating exchange interactions via the Fierz transformation -- to finite temperatures in both two- and three-flavor scenarios, and investigate the properties of protoquark stars in $β$-equilibrium. Our results show that increasing the strength of exchange interactions, characterized by the parameter $α$, changes the chiral phase transition from first-order to crossover. We examine the effects of finite temperature, lepton fraction,…

Particle Injection in 3D Relativistic Magnetic Reconnection
Omar French, Gregory R. Werner, Dmitri A. Uzdensky
https://arxiv.org/abs/2508.14886 https://arx…

Particle Injection in 3D Relativistic Magnetic Reconnection
Relativistic magnetic reconnection has been proposed as an important nonthermal particle acceleration (NTPA) mechanism that generates power-law spectra and high-energy emissions. Power-law particle spectra are in general characterized by three parameters: the power-law index, the high-energy cutoff, and the low-energy cutoff (i.e., the injection energy). Particle injection into the nonthermal power law, despite also being a critical step in the NTPA chain, has received considerably less attenti…

Autferroicity: concept, candidates, and applications
Jun-Jie Zhang, Ziwen Wang, Shuai Dong
https://arxiv.org/abs/2507.13733 https://a…

Autferroicity: concept, candidates, and applications
Autferroicity is a newly proposed form of hybrid ferroicity, which is a sister branch of multiferroicity. It is characterized by the mutually exclusive magnetic and polar phases within a single system, giving a unique seesaw-type magnetoelectric coupling. This perspective provides a theoretical overview of its underlying concept, phase diagram characteristics, and representative candidates such as Ti-based trichalcogenide monolayers, while also highlighting its potential applications in nonvola…

Linear response and exact hydrodynamic projections in Lindblad equations with decoupled Bogoliubov hierarchies
Patrik Penc, Fabian H. L. Essler
https://arxiv.org/abs/2507.13867

Linear response and exact hydrodynamic projections in Lindblad equations with decoupled Bogoliubov hierarchies
We consider a class of spinless-fermion Lindblad equations that exhibit decoupled BBGKY hierarchies. In the cases where particle number is conserved, their late time behaviour is characterized by diffusive dynamics, leading to an infinite temperature steady state. Some of these models are Yang-Baxter integrable, others are not. The simple structure of the BBGKY hierarchy makes it possible to map the dynamics of Heisenberg-picture operators on few-body imaginary-time Schrödinger equations with …

The SPACE Program I: The featureless spectrum of HD 86226 c challenges sub-Neptune atmosphere trends
K. Angelique Kahle (Max Planck Institute for Astronomy, Department of Physics and Astronomy, Heidelberg University), Jasmina Blecic (Department of Physics, New York University Abu Dhabi, Center for Astrophysics and Space Science), Reza Ashtari (JHU Applied Physics Laboratory), Laura Kreidberg (Max Planck Institute for Astronomy), Yui Kawashima (Department of Astronomy, Graduate School o…

The SPACE Program I: The featureless spectrum of HD 86226 c challenges sub-Neptune atmosphere trends
Sub-Neptune exoplanets are the most abundant type of planet known today. As they do not have a Solar System counterpart, many open questions exist about their composition and formation. Previous spectroscopic studies rule out aerosol-free hydrogen-helium-dominated atmospheres for many characterized sub-Neptunes but are inconclusive about their exact atmospheric compositions. Here we characterize the hot (Teq=1311K) sub-Neptune HD 86226 c, which orbits its G-type host star. Its high equilibrium …

Spin-Orbital Altermagnetism
Zi-Ming Wang, Yang Zhang, Song-Bo Zhang, Jin-Hua Sun, Elbio Dagotto, Dong-Hui Xu, Lun-Hui Hu
https://arxiv.org/abs/2509.15604 https://

Spin-Orbital Altermagnetism
Altermagnet is a newly discovered magnetic phase, characterized by non-relativistic spin-splitting that has been experimentally observed. Here, we introduce a framework dubbed {\it spin-orbital altermagnetism} to achieve spin-orbital textures in altermagnetic materials. We identify two distinct classes of spin-orbital altermagnetism: intrinsic and extrinsic. The intrinsic type emerges from symmetry-compensated magnetic orders with spontaneously broken parity-time symmetry, while the extrinsic t…

Maya-Tupi graphs: a generalization of split graphs
J\'ulio Ara\'ujo, C\'esar Hern\'andez-Cruz, Cl\'audia Linhares
https://arxiv.org/abs/2508.13424 https://…

Maya-Tupi graphs: a generalization of split graphs
We define the family of Maya-Tupi graphs as those graphs that admit a partition $(A,B)$ of their vertex sets such that $A$ induces a complete multipartite graph where each part has size at most two, and $B$ induces a graph where every connected component is $K_1$ or $K_2$. The family of Maya-Tupi graphs is self complementary, generalizes split graphs, falls into the sparse-dense partitioning schema and is characterized by finitely many forbidden induced subgraphs. Unfortunately, our computation…

Optics in spiral dislocation spacetime: Torsion as a geometric waveguide and frequency-filtering mechanism
Semra Gurtas Dogan, Omar Mustafa, Abdullah Guvendi, Hassan Hassanabadi
https://arxiv.org/abs/2507.14865

Optics in spiral dislocation spacetime: Torsion as a geometric waveguide and frequency-filtering mechanism
We present an exact analytical investigation of null trajectories and scalar wave propagation in a $(2+1)$-dimensional spacetime containing a spiral dislocation-a topological defect characterized by torsion in the absence of curvature. For null rays, the torsion parameter $β$ modifies the affine structure, enforcing a finite turning radius $r_{\min} = \sqrt{b^2 - β^2}$ and inducing a torsion-mediated angular deflection that decreases monotonically with increasing $β$. The photon trajectory d…

OpenLens AI: Fully Autonomous Research Agent for Health Infomatics
Yuxiao Cheng, Jinli Suo
https://arxiv.org/abs/2509.14778 https://arxiv.org/pdf/2509.1477…

OpenLens AI: Fully Autonomous Research Agent for Health Infomatics
Health informatics research is characterized by diverse data modalities, rapid knowledge expansion, and the need to integrate insights across biomedical science, data analytics, and clinical practice. These characteristics make it particularly well-suited for agent-based approaches that can automate knowledge exploration, manage complex workflows, and generate clinically meaningful outputs. Recent progress in large language model (LLM)-based agents has demonstrated promising capabilities in lit…

Photonic time crystals assisted by quasi-bound states in the continuum
P. Garg, E. Almpanis, L. Zimmer, J. D. Fischbach, X. Wang, M. S. Mirmoosa, M. Nyman, N. Stefanou, N. Papanikolaou, V. Asadchy, C. Rockstuhl
https://arxiv.org/abs/2507.15644

Photonic time crystals assisted by quasi-bound states in the continuum
Photonic time crystals are a class of artificial materials that have only recently been explored. They are characterized by the ultrafast modulation of the material properties in time, causing a momentum bandgap for light that propagates through such novel states of matter. However, the observation of these unique properties at optical frequencies remains elusive, as the necessary modulation amplitudes of the permittivity to show notable momentum bandgaps are relatively high, inaccessible with …

Classification of Magnetism and Altermagnetism in Quasicrystals
Zhi-Yan Shao, Chen Lu, Zhiming Pan, Yu-Bo Liu, Fan Yang
https://arxiv.org/abs/2508.15702 https://

Classification of Magnetism and Altermagnetism in Quasicrystals
Altermagnetism, an unconventional magnetic phase characterized by zero net magnetism and a spin-split electronic band, has been studied exclusively in conventional crystalline materials. In this work, we extend the theoretical framework of altermagnetism to quasicrystals (QCs), which lack translational symmetry. We classify magnetic phases in 2D QCs with $n$-fold rotational symmetry without spin-orbit coupling, by using the irreducible representation (IRRP) of the $D_n$ point group. Based on sy…

Gluon Wigner distributions with transverse polarization at non-zero skewness
Sujit Jana, Kenil Solanki, Vikash Kumar Ojha
https://arxiv.org/abs/2507.13691 …

Gluon Wigner distributions with transverse polarization at non-zero skewness
We investigate the gluon Wigner distributions at non-zero skewness using light-front wave functions (LFWFs) in the dressed quark model, where the target state is a quark dressed with a gluon in the leading-order Fock space expansion. The analysis is for the configurations where either the gluon or the target is transversely polarized. We construct the Wigner distributions in a boost-invariant longitudinal space, characterized by the variable $σ=\frac{1}{2}b^-P^+$, which is conjugate to the ske…

Transient QPOs of Fermi-LAT blazars with Linearly Multiplicative Oscillations
P. Penil, J. Otero-Santos, A. Circiello, A. Banerjee, S. Buson, A. Rico, M. Ajello, S. Adhikari
https://arxiv.org/abs/2507.13906

Transient QPOs of Fermi-LAT blazars with Linearly Multiplicative Oscillations
We present a study on the detection and characterization of transient quasi-periodic oscillations (QPOs) in the $γ$-ray emission of blazars 4C +31.03, MG1 J123931+0443, and PKS 1622$-$253. Using light curves derived from \textit{Fermi} Large Area Telescope data, we investigate oscillatory patterns characterized by periodic multiplicative amplitudes that vary linearly over time. By segmenting the light curves into increasing and decreasing trends, we analyze each segment independently, allowing…

Phase Transition Under Control: Toward Application-Oriented Luminescence Thermometry and Thermally Activated Emission
M. T. Abbas, M. Szymczak, D. Szymanski, J. Zeler, M. Drozd, L. T. K Giang, L. Marciniak
https://arxiv.org/abs/2507.13750

Phase Transition Under Control: Toward Application-Oriented Luminescence Thermometry and Thermally Activated Emission
Phase-transition-based luminescent thermometers are characterized by two inherent limitations: a narrow thermal operating range and the presence of a hysteresis loop in the thermometric parameter. In this work, we demonstrate that controlling the particle size of LaGaO3:Eu3+ phosphors enables significant enhancement of thermometric performance. Specifically, a reduction in grain size dispersion leads to an increase in relative thermal sensitivity and significantly narrows the hysteresis loop. A…

EgoTwin: Dreaming Body and View in First Person
Jingqiao Xiu, Fangzhou Hong, Yicong Li, Mengze Li, Wentao Wang, Sirui Han, Liang Pan, Ziwei Liu
https://arxiv.org/abs/2508.13013 …

EgoTwin: Dreaming Body and View in First Person
While exocentric video synthesis has achieved great progress, egocentric video generation remains largely underexplored, which requires modeling first-person view content along with camera motion patterns induced by the wearer's body movements. To bridge this gap, we introduce a novel task of joint egocentric video and human motion generation, characterized by two key challenges: 1) Viewpoint Alignment: the camera trajectory in the generated video must accurately align with the head trajectory …

Equatorial light bending around a Hairy Kiselev Black Hole
Shrishti Kukreti, Shubham Kala, Hemwati Nandan, Faizuddin Ahmed, Saswati Roy
https://arxiv.org/abs/2507.15298

Equatorial light bending around a Hairy Kiselev Black Hole
We investigate the deflection angle of light rays confined to the equatorial plane of a Hairy Kiselev black hole. The analysis includes a thorough study of the horizon structure and critical parameters, leading to an analytic expression for the deflection angle in terms of elliptic integrals. Our results confirm that the deflection angle decreases with increasing impact parameter, in agreement with classical predictions of gravitational lensing. The influence of the scalar field, characterized …

Beyond the Nyquist frequency: Asteroseismic catalog of undersampled Kepler late subgiants and early red giants
B. Liagre, R. A. Garc\'ia, S. Mathur, M. H. Pinsonneault, A. Serenelli, J. C. Zinn, K. Cao, D. Godoy-Rivera, J. Tayar, P. G. Beck, D. H. Grossmann, D. B. Palakkatharappil
https://arxiv.org/abs/2508.15654

Beyond the Nyquist frequency: Asteroseismic catalog of undersampled Kepler late subgiants and early red giants
Subgiants and early red giants are crucial for studying the first dredge-up, a key evolutionary phase where the convective envelope deepens, mixing previously interior-processed material and bringing it to the surface. Yet, very few have been seismically characterized with Kepler because their oscillation frequencies are close to the 30 minute sampling frequency of the mission. We developed a new method as part of the new PyA2Z code to identify super-Nyquist oscillators and infer their global s…

Giant Resonance Raman Scattering via Anisotropic Excitons in ReS2
Pritam Das, Devarshi Chakrabarty, Neha Gill, Sajal Dhara
https://arxiv.org/abs/2507.15327

Giant Resonance Raman Scattering via Anisotropic Excitons in ReS2
Anisotropic two-dimensional (2D) semiconductors recently have emerged as a promising platform for polarization-controlled Raman amplification. In this study, we probe energy-dependent resonant Raman scattering in few layer ReS2 under different polarization configurations. We identify two distinct excitation regimes, each characterized by a resonance condition where either the pump or the Stokes photon energy aligns with an excitonic transition. A two-order-of-magnitude enhancement in Raman inte…

Quantized decay charges in non-Hermitian networks characterized by directed graphs
Wenwen Liu, Junyao Wu, Li Zhang, Oubo You, Ye Tian, Wenan Zang, Hongsheng Chen, Bumki Min, Yihao Yang, Shuang Zhang
https://arxiv.org/abs/2507.11322

Quantized decay charges in non-Hermitian networks characterized by directed graphs
Non-Hermitian physics has unveiled a realm of exotic phenomena absent in Hermitian systems, with the non-Hermitian skin effect (NHSE) showcasing boundary-localized eigenstates driven by non-reciprocal interactions. Here, we introduce a new class of non-Hermitian systems exhibiting pure decay modes: eigenstates with pure, smooth exponential decay, devoid of the oscillatory wave patterns typical of traditional NHSE. Modeled as directed graphs with non-reciprocal hopping, these systems reveal quan…

A Spectroscopic Hunt for Post-Red Supergiants in the Large Magellanic Cloud II: Turbulent Line Broadening in the Spectra of LMC Yellow Supergiants
Trevor Z. Dorn-Wallenstein, Kaitlyn M. Chen, Samantha C. Wu, Jared A. Goldberg, Anna J. G. O'Grady, Ayanna T. Mann, Poderosa I. Don-Wallanchez
https://arxiv.org/abs/2508.14971

A Spectroscopic Hunt for Post-Red Supergiants in the Large Magellanic Cloud II: Turbulent Line Broadening in the Spectra of LMC Yellow Supergiants
Massive stars in the Hertzsprung gap are a mixed population of objects in short-lived evolutionary phases: yellow supergiants (YSGs) evolving towards the red supergiant (RSG) phase, partially-stripped post-RSGs, and other, rarer outcomes of stellar evolution. Studies of sufficiently large samples of these objects can constrain massive star structure and evolution during these poorly-understood phases. As part of our ongoing program searching for post-RSGs, we characterized the spectral line pro…

Polarization Vortex for Enhanced Refractive Index Sensing
Ravshanjon Nazarov, Mingzhao Song, Andrey Bogdanov, Zarina Kondratenko
https://arxiv.org/abs/2507.15705

Polarization Vortex for Enhanced Refractive Index Sensing
Although all-dielectric sensors exhibit minimal absorption and a high figure of merit (FOM), their sensitivity is significantly lower compared to plasmonic sensors. One approach to enhancing the sensitivity of dielectric sensors is utilizing bound states in the continuum (BICs), which are resonant states with an infinite radiative lifetime. These states are characterized by polarization vortices in the far field, whose winding number determines the topological charge. Here, we demonstrate that …

Schr\"odingerization for quantum linear systems problems
Yin Yang, Yue Yu, Long Zhang
https://arxiv.org/abs/2508.13510 https://arxiv.org/pdf/2508.1351…

Schrödingerization for quantum linear systems problems
We develop a quantum algorithm for linear algebraic equations Ax=b from the perspective of Schrödingerization-form problems, which are characterized by a system of linear convection equations in one higher dimension. When A is positive definite, the solution x can be interpreted as the steady-state solution of linear ODEs. This ODE can be solved by using the LCHS method in [1], which serves as the continuous implementation of the Fourier transform in the Schrödingerization method from [2,3] S…

Zak Phase Dislocations in Trimer Lattices
Tileubek Uakhitov, Abdybek Urmanov, Serik E. Kumekov, Anton S. Desyatnikov
https://arxiv.org/abs/2509.15894 https://

Zak Phase Dislocations in Trimer Lattices
Wave propagation in periodic media is governed by energy-momentum relation and geometric phases characterizing band topology, such as Zak phase in one-dimensional lattices. We demonstrate that in the off-diagonal trimer lattices Zak phase carries quantized screw-type dislocations winding around degeneracies in parameter space. If the lattice evolves in time periodically, as in adiabatic Thouless pump, corresponding closed trajectory in parameter space is characterized by a Chern number equal th…

Chaos and quantum regimes in $n$-photon driven, dissipative bosonic chains
Leo Kruglikov, Filippo Ferrari, Vincenzo Savona
https://arxiv.org/abs/2508.13398 https://

Chaos and quantum regimes in $n$-photon driven, dissipative bosonic chains
We investigate the steady-state dynamical regimes of boundary-driven, dissipative bosonic chains subjected to $n$-photon drives. Using the truncated Wigner approximation, we explore how multi-photon drives shape the interplay between quantum fluctuations, nonlinear interactions, and dissipative processes in such quantum systems. We identify two main regimes: a chaotic hydrodynamic regime characterized by the restoration of a local $\mathbb{U}(1)$ symmetry, photon saturation due to Kerr nonlinea…