Tootfinder

Vacuum Energy and Topological Mass from a Constant Magnetic Field and Boundary Conditions in Coupled Scalar Field Theories
A. J. D. Farias Junior, Andrea Erdas, Herondy F. Santana Mota
https://arxiv.org/abs/2508.15121

Vacuum Energy and Topological Mass from a Constant Magnetic Field and Boundary Conditions in Coupled Scalar Field Theories
We investigate the combined effects of a uniform magnetic field and boundary conditions on vacuum energy and topological mass generation in a coupled scalar field theory. The system consists of a real scalar field, subject to Dirichlet boundary conditions, interacting via self- and cross-couplings with a gauge-coupled complex scalar field obeying mixed boundary conditions between two perfectly reflecting parallel plates. The magnetic field induces Landau quantization, leading to novel contribut…

Euclid preparation: Expected constraints on initial conditions
Collaboration, Finelli, Akrami, Andrews, Ballardini, Casas, Karagiannis, Sakr, Valiviita, Alestas, Bartolo, Bermejo-Climent, Nesseris, Paoletti, Sapone, Tutusaus, Ach\'ucarro, Ca\~nas-Herrera, Jasche, Lavaux, Aghanim, Altieri, Amara, Amendola, Andreon, Auricchio, Baccigalupi, Bagot, Baldi, Bardelli, Battaglia, Biviano, Branchini, Brescia, Camera, Capobianco, Carbone, Carretero, Castellano, Castignani, Cavuoti, Chambers,…

Euclid preparation: Expected constraints on initial conditions
The Euclid mission of the European Space Agency will deliver galaxy and cosmic shear surveys, which will be used to constrain initial conditions and statistics of primordial fluctuations. We present highlights for the Euclid scientific capability to test initial conditions beyond LCDM with the main probes, i.e. 3D galaxy clustering from the spectroscopic survey, the tomographic approach to 3x2pt statistics from photometric galaxy survey, and their combination. We provide Fisher forecasts from t…

Positive curvature conditions on contractible manifolds
Paul Sweeney Jr
https://arxiv.org/abs/2507.15719 https://arxiv.org/pdf/2507.1…

Positive curvature conditions on contractible manifolds
Our goal is to identify curvature conditions that distinguish Euclidean space in the case of open, contractible manifolds and the disk in the case of compact, contractible manifolds with boundary. First, we show that an open manifold that is the interior of a sufficiently connected, compact, contractible 5-manifold with boundary and supports a complete Riemannian metric with uniformly positive scalar curvature is diffeomorphic to Euclidean 5-space. Next, we investigate the analogous question fo…

#COZMIC - Cosmological Zoom-in Simulations with Initial Conditions Beyond Cold Dark Matter / Cosmological Zoom-in Simulations with Fractional non-CDM Initial Conditions / Cosmological Zoom-in Simulations of Self-interacting Dark Matter with Suppressed Initial Conditions: https://iopscience.iop.org/article/10.3847/1538-4357/adceef / https://iopscience.iop.org/article/10.3847/1538-4357/adce83 / https://iopscience.iop.org/article/10.3847/1538-4357/adce82 -> Scientists code Milky Way twin galaxies to better understand dark matter: https://today.usc.edu/scientists-code-milky-way-twin-galaxies-to-better-understand-dark-matter - USC researchers led the development of a computer simulation that gives astrophysicists a mechanism for testing ideas about dark matter and its behavior in the Milky Way and other galaxies.

Multichannel Keyword Spotting for Noisy Conditions
Dzmitry Saladukha, Ivan Koriabkin, Kanstantsin Artsiom, Aliaksei Rak, Nikita Ryzhikov
https://arxiv.org/abs/2507.15558

Multichannel Keyword Spotting for Noisy Conditions
This article presents a method for improving a keyword spotter (KWS) algorithm in noisy environments. Although beamforming (BF) and adaptive noise cancellation (ANC) techniques are robust in some conditions, they may degrade the performance of the activation system by distorting or suppressing useful signals. The authors propose a neural network architecture that uses several input channels and an attention mechanism that allows the network to determine the most useful channel or their combinat…

Correlating Particle Acceleration Rates with Plasma Conditions in Colliding Wind Binaries
Gislaine B Cordeiro, Diego Falceta-Gon\c{c}alves, Grzegorz Kowal, Vanessa Giraldez-Garcia
https://arxiv.org/abs/2508.15059

Correlating Particle Acceleration Rates with Plasma Conditions in Colliding Wind Binaries
Recent observations have revealed star-forming regions as possible origin sites of very-high-energy (TeV) cosmic rays, not associated with supernova remnants. Colliding-wind binaries (CWBs) are strong X-ray and radio synchrotron emitters and have been proposed as potential accelerators of such particles. We perform high-resolution three-dimensional magnetohydrodynamic simulations coupled with test-particle integration to investigate how local plasma conditions affect particle acceleration in CW…

$\textit{A Priori}$ Error Analysis for the $p$-Stokes Equations with Slip Boundary Conditions: A Discrete Leray Projection Framework
Alex Kaltenbach, J\"orn Wichmann
https://arxiv.org/abs/2507.15016

$\textit{A Priori}$ Error Analysis for the $p$-Stokes Equations with Slip Boundary Conditions: A Discrete Leray Projection Framework
We present an $\textit{a priori}$ error analysis for the kinematic pressure in a fully-discrete finite-differences/-elements discretization of the unsteady $p$-Stokes equations, modelling non-Newtonian fluids. This system is subject to both impermeability and perfect Navier slip boundary conditions, which are incorporated either weakly via Lagrange multipliers or strongly in the discrete velocity space. A central aspect of the $\textit{a priori}$ error analysis is the discrete Leray projection,…

“They haven’t given us food, they haven’t given us medicine. We’re cold. There are people who’ve been here for 10, 15 days inside. We’re just waiting.”
Concerns about what goes on inside the federal building had been growing.
Advocates, attorneys and immigrants themselves have described the 10th floor as overcrowded, with no beds, showers, or adequate access to food or healthcare.
“Ice is kidnapping so many people from New York’s immigration courts that they had to create a …

Pattern formations of coupled PDEs with transparent boundary conditions in product-type ends and applications
Huaian Diao, Hongyu Liu, Qingle Meng, Li Wang
https://arxiv.org/abs/2507.14779

Pattern formations of coupled PDEs with transparent boundary conditions in product-type ends and applications
This paper studies pattern formations in coupled elliptic PDE systems governed by transparent boundary conditions. Such systems unify diverse areas, including inverse boundary problems (via a single passive/active boundary measurement), spectral geometry of transmission eigenfunctions, and geometric characterization of invisibility phenomena and inverse shape problems in wave scattering. We uncover and rigorously characterize a novel local pattern formation, establishing a sharp quantitative re…

All-UWB SLAM Using UWB Radar and UWB AOA
Charith Premachandra, Achala Athukorala, U-Xuan Tan
https://arxiv.org/abs/2507.15474 https://

All-UWB SLAM Using UWB Radar and UWB AOA
There has been a growing interest in autonomous systems designed to operate in adverse conditions (e.g. smoke, dust), where the visible light spectrum fails. In this context, Ultra-wideband (UWB) radar is capable of penetrating through such challenging environmental conditions due to the lower frequency components within its broad bandwidth. Therefore, UWB radar has emerged as a potential sensing technology for Simultaneous Localization and Mapping (SLAM) in vision-denied environments where opt…

Beck-Chevalley Conditions in Simplicial Sets
Gaga Chakhvashvili
https://arxiv.org/abs/2507.15341 https://arxiv.org/pdf/2507.15341

Beck-Chevalley Conditions in Simplicial Sets
We describe certain class of simplicial sets introduced around 2022 by Valentin Shehtman; we call such simplicial sets Shehtman complexes. An example of a Shehtman complex that is not a Kan complexes is given.

Conditions are perfect in the Maine woods for moose-killing ticks - United States
https://www.europesays.com/us/2776/

Videos reveal harsh conditions inside Ice's New York City confinement center (Marina Dunbar/The Guardian)
https://www.theguardian.com/us-news/2025/jul/22/ice-videos-new-york-trump
http://www.memeorandum.com/250722/p159#a250722p159

Energy conditions for regular black holes in EFT of gravity
Ziyue Zhu, Alexey S. Koshelev, Yang Liu, Anna Tokareva
https://arxiv.org/abs/2508.15745 https://

Energy conditions for regular black holes in EFT of gravity
As Einstein's gravity is a non-renormalizable theory, it can be a good description of physics only at the scales of energy or spacetime curvature below the Planck mass. Moreover, it requires the presence of an infinite tower of higher-derivative corrections, as required in the framework of effective field theory (EFT). Black holes, known to be vacuum solutions in Einstein's gravity, necessarily have singularities in the center, where both Einstein's gravity and low-energy EFT expansions break d…

General Kontsevich-style formula for Hirzebruch Surfaces
Parisa Ebrahimian
https://arxiv.org/abs/2508.14206 https://arxiv.org/pdf/2508.14206

General Kontsevich-style formula for Hirzebruch Surfaces
Tyomkin's correspondence theorem states the equality of counts of rational curves of fixed homology class in a toric surface satisfying point and cross-ratio conditions with their tropical counterparts. Such correspondence theorems allow us to derive non-tropical results from tropical ones; for example, Mikhalkin's correspondence theorem is used in the tropical proof of the famous Kontsevich formula for counts of plane rational curves of degree $d$ satisfying point conditions. This formula has …

L’Opus Dei mis en cause dans une affaire de traite d’êtres humains en Argentine
https://www.lemonde.fr/international/article/2025/07/17/l-opus-dei-mis-en-cause-dans-une-affaire-de-traite-…

L’Opus Dei mis en cause dans une affaire de traite d’êtres humains en Argentine
Suite à des plaintes de femmes affirmant avoir travaillé sans salaire et dans des conditions très difficiles pour l’institution catholique conservatrice, le numéro deux de l’organisation, basée à Rome, pourrait être mis en examen. Quatre responsables argentins ont déjà été mis en examen en 2024.

Low Speed Oblique Impact Behavior On Granular Media Across Gravitational Conditions; The role of cohesion
Seungju Yeo, Rachel Glade, Alice Quillen, Hesam Askari
https://arxiv.org/abs/2507.14645

Low Speed Oblique Impact Behavior On Granular Media Across Gravitational Conditions; The role of cohesion
Analyses of impact provide rich insights from the evolution of granular bodies to their structural properties of the surface and subsurface layers of celestial bodies. Although chemical cohesive bonding has been observed in asteroid samples, and low-speed impact has been a subject of many studies, our understanding of the role of cohesion in these dynamics is limited, especially at small gravities such as those observed on asteroid surfaces. In this work, we use numerical discrete element metho…

Necessary and sufficient conditions for relative controllability of discrete linear delay systems
Javad A. Asadzade, Nazim I. Mahmudov
https://arxiv.org/abs/2508.13336 https://

Necessary and sufficient conditions for relative controllability of discrete linear delay systems
In this paper, we investigate delayed linear difference systems and establish several fundamental results. We first provide a Kalman-type rank condition tailored for delayed linear difference systems. Furthermore, we construct the discrete Gramian matrix and prove its non-singularity, which is essential for analyzing system properties. Additionally, we obtain necessary and sufficient conditions ensuring the relative controllability of the system. Finally, we formulate the control function for e…

How is that #PGE spends money on PR messaging about how safety is so important, and yet happily continues to tolerate unsafe conditions that result result in #wildfires and fines?

How is that #PGE spends money on PR messaging about how safety is so important, and yet happily continues to tolerate unsafe conditions that result result in #wildfires and fines?

Trump sets CLEAR conditions for Putin — 50 days to make a DEAL! #shorts: https://benborges.xyz/2025/07/14/trump-sets-clear-conditions-for.html

🧑‍🚒 California wood pellet plants canceled amid market decline & public pushback
https://news.mongabay.com/short-article/2025/07/california-wood-pellet-plants-canceled-amid-market-decline-public-pushback/

California wood pellet plants canceled amid market decline & public pushback
Golden State Natural Resources (GSNR), a California nonprofit that focuses on rural economic development, has canceled plans to build two industrial-scale wood pellet plants in the state. The organization cited weakening market conditions and pushback from locals as the drivers of their decision. Conservation groups are hailing the move as a win for forests and […]

K-Means Panel Data Clustering in the Presence of Small Groups
Mikihito Nishi
https://arxiv.org/abs/2508.15408 https://arxiv.org/pdf/2508.15408

K-Means Panel Data Clustering in the Presence of Small Groups
We consider panel data models with group structure. We study the asymptotic behavior of least-squares estimators and information criterion for the number of groups, allowing for the presence of small groups that have an asymptotically negligible relative size. Our contributions are threefold. First, we derive sufficient conditions under which the least-squares estimators are consistent and asymptotically normal. One of the conditions implies that a longer sample period is required as there are …

Asymptotic analysis on narrow tubes: narrow escape problems and diffusion processes
Wen-Tai Hsu
https://arxiv.org/abs/2508.15060 https://arxiv.org/pdf/2508…

Asymptotic analysis on narrow tubes: narrow escape problems and diffusion processes
This paper investigates a diffusion process in a narrow tubular domain with reflecting boundary conditions, where the geometry serves as a singular perturbation of an underlying graph in $\mathbb{R}^2$ or $\mathbb{R}^3$. The construction incorporates distinct scaling regimes in the neighborhoods of the graph's vertices and edges. We show that, in the limit, the projected process converges weakly to a diffusion process on the graph, with gluing conditions at the vertices that depend on the relat…

LLM4Sweat: A Trustworthy Large Language Model for Hyperhidrosis Support
Wenjie Lin, Jin Wei-Kocsis
https://arxiv.org/abs/2508.15192 https://arxiv.org/pdf/2…

LLM4Sweat: A Trustworthy Large Language Model for Hyperhidrosis Support
While large language models (LLMs) have shown promise in healthcare, their application for rare medical conditions is still hindered by scarce and unreliable datasets for fine-tuning. Hyperhidrosis, a disorder causing excessive sweating beyond physiological needs, is one such rare disorder, affecting 2-3% of the population and significantly impacting both physical comfort and psychosocial well-being. To date, no work has tailored LLMs to advance the diagnosis or care of hyperhidrosis. To addres…

DIME-Net: A Dual-Illumination Adaptive Enhancement Network Based on Retinex and Mixture-of-Experts
Ziang Wang, Xiaoqin Wang, Dingyi Wang, Qiang Li, Shushan Qiao
https://arxiv.org/abs/2508.13921

DIME-Net: A Dual-Illumination Adaptive Enhancement Network Based on Retinex and Mixture-of-Experts
Image degradation caused by complex lighting conditions such as low-light and backlit scenarios is commonly encountered in real-world environments, significantly affecting image quality and downstream vision tasks. Most existing methods focus on a single type of illumination degradation and lack the ability to handle diverse lighting conditions in a unified manner. To address this issue, we propose a dual-illumination enhancement framework called DIME-Net. The core of our method is a Mixture-of…

Stability conditions of chemical networks in a linear framework
Armand Despons, J\'er\'emie Unterberger, David Lacoste
https://arxiv.org/abs/2507.14941

Stability conditions of chemical networks in a linear framework
Autocatalytic chemical reaction networks can collectively replicate or maintain their constituents despite degradation reactions only above a certain threshold, which we refer to as the decay threshold. When the chemical network has a Jacobian matrix with the Metzler property, we leverage analytical methods developed for Markov processes to show that the decay threshold can be calculated by solving a linear problem, instead of the standard eigenvalue problem. We explore how this decay threshold…

A Proof System with Causal Labels (Part II): checking Counterfactual Fairness
Leonardo Ceragioli, Giuseppe Primiero
https://arxiv.org/abs/2507.14655 https:…

A Proof System with Causal Labels (Part II): checking Counterfactual Fairness
In this article we propose an extension to the typed natural deduction calculus TNDPQ to model verification of counterfactual fairness in probabilistic classifiers. This is obtained formulating specific structural conditions for causal labels and checking that evaluation is robust under their variation.

Two videos have surfaced shedding light on what is happening behind closed doors at a New York federal building -- where people are being confined after being seized by officers on their way out of immigration court on the 12th floor, with the footage offering a rare look inside a controversial and closely guarded space that is part of Donald Trump’s anti-immigration crackdown.
The filming, shared by the New York Immigration Coalition(NYIC), captures one of several rooms at 26 Federal …

Necessary and sufficient conditions for correctness of complex Langevin
Michael Mandl, Erhard Seiler, D\'enes Sexty
https://arxiv.org/abs/2508.14512 https://

Necessary and sufficient conditions for correctness of complex Langevin
We derive a family of correctness conditions for complex Langevin simulations. In particular, we show that if in a given theory the expectation values of all observables within a particular space satisfy the theory's Schwinger--Dyson equations as well as certain bounds, then these expectation values are necessarily correct. In fact, these findings are not only valid in the context of complex Langevin simulations, but they also hold for general probability densities on complex manifolds, given a…

Global well-posedness for the Keller--Segel--Navier--Stokes system with nonlinear boundary conditions
Taiki Takeuchi, Keiichi Watanabe
https://arxiv.org/abs/2507.13684

Global well-posedness for the Keller--Segel--Navier--Stokes system with nonlinear boundary conditions
In this paper, we consider the Keller--Segel--Navier--Stokes system with nonlinear boundary conditions in a bounded smooth (and not necessarily convex) domain $Ω\subset \mathbb{R}^N$, $N \ge 2$, where the chemotactic sensitivity $S$ is assumed to have values in $\mathbb{R}^{N \times N}$ which accounts for rotational fluxes. In contrast to the case where $S$ is a scalar-valued function (or $S$ is the identity matrix), in our system, the normal derivative for the density $n$ of the cell is given…

A boundary characterization of Turaev-Viro TQFTs
Max-Niklas Steffen, Christoph Schweigert
https://arxiv.org/abs/2508.13759 https://arxiv.org/pdf/2508.13759…

A boundary characterization of Turaev-Viro TQFTs
We consider three-dimensional topological field theories on manifolds with boundary defects and identify explicit boundary locality conditions. These conditions imply a state sum construction of the given TQFT. As a consistency check, we prove that Turaev-Viro state sum models obey the boundary locality conditions. Recent progress (arXiv:2410.18049v1) in the description of defects in Dijkgraaf-Witten theories enables us to show that these theories likewise satisfy boundary locality. This direct…

Non-representable quantum measures
Alexandru Chirvasitu
https://arxiv.org/abs/2508.14326 https://arxiv.org/pdf/2508.14326

Non-representable quantum measures
Grade-$d$ measures on a $σ$-algebra $\mathcal{A}\subseteq 2^X$ over a set $X$ are generalizations of measures satisfying one of a hierarchy of weak additivity-type conditions initially introduced as interference operators in quantum mechanics. Every signed polymeasure $λ$ on $(X,\mathcal{A})^d$ produces a grade-$d$ measure as its diagonal $\widetildeλ(A):=λ(A,\cdots,A)$, and we prove that as soon as $d\ge 2$ measures (as opposed to polymeasures) do not suffice: the separate $σ$-additivity …

Le trafic est perturbé entre Paris Saint-Lazare et Cergy le Haut dans les 2 sens.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne L.
Motif : conditions de départ non réunies Š Cergy le Haut.
🤖 23/06 07:16

https://www.wired.com/story/highly-sensitive-medical-cannabis-patient-data-exposed-by-unsecured-database/
Highly Sensitive Medical Cannabis Patient Data Exposed by Unsecured Database

Highly Sensitive Medical Cannabis Patient Data Exposed by Unsecured Database
Nearly a million records, which appear to be linked to a medical cannabis card company in Ohio, included Social Security numbers, government IDs, health conditions, and more.

Initiating and Replicating the Observations of Interactional Properties by User Studies Optimizing Applicative Prototypes
Guillaume Rivi\`ere
https://arxiv.org/abs/2507.13923

Initiating and Replicating the Observations of Interactional Properties by User Studies Optimizing Applicative Prototypes
The science of Human-Computer Interaction (HCI) is populated by isolated empirical findings, often tied to specific technologies, designs, and tasks. This paper proposes a formalization of user interaction observations (instead of user interfaces) and an associated revealing method (interaction loop diffraction). The resulting interactional properties that are studied in a calibrated manner, are well suited to replication across various conditions (prototypes, technologies, tasks, and user prof…

Bounds and Constructions of High-Memory Spatially-Coupled Codes
Lei Huang
https://arxiv.org/abs/2507.14064 https://arxiv.org/pdf/2507…

Bounds and Constructions of High-Memory Spatially-Coupled Codes
In this paper, we apply the Clique Lovász Local Lemma to provide sufficient conditions on memory and lifting degree for removing certain harmful combinatorial structures in spatially-coupled (SC) codes that negatively impact decoding performance. Additionally, we present, for the first time, a constructive algorithm based on the Moser-Tardos algorithm that ensures predictable performance. Furthermore, leveraging the properties of LLL-distribution and M-T-distribution, we establish the dependen…

On rainbow caterpillars in elementary $p$-groups
Sylwia Cichacz, Barbara Krupi\'nska, Mariusz Wo\'zniak
https://arxiv.org/abs/2507.15083 https://…

On rainbow caterpillars in elementary $p$-groups
Given a finite Abelian group $(A,+)$, consider a tree $T$ with $|A|$ vertices. The labeling $f \colon V (T) \rightarrow A$ of the vertices of some graph $G$ induces an edge labeling in $G$, thus the edge $uv$ receives the label $f (u) + f (v)$. The tree $T$ is $A$-rainbow colored if $f$ is a bijection and edges have different colors. In this paper, we give necessary and sufficient conditions for a caterpillar with three spine vertices to be $A$-rainbow, when $A$ is an elementary $p$…

Abusive Practices at Three Florida Immigration Detention Centers Since January 2025
https://www.hrw.org/report/2025/07/21/you-feel-like-your-life-is-over/abusive-practices-at-three-florida-immigration
Our el…

“You Feel Like Your Life is Over”
The 92-page report, “‘You Feel Like Your Life is Over’: Abusive Practices at Three Florida Immigration Detention Centers Since January 2025,” documents that people detained at Krome North Service Processing Center (Krome), Broward Transitional Center (BTC), and the Federal Detention Center (FDC) in Miami have been held in overcrowded and unsanitary conditions and subjected to degrading treatment, and have not been given access to prompt and adequate medical care. The groups also reporte…

MeMo: Attentional Momentum for Real-time Audio-visual Speaker Extraction under Impaired Visual Conditions
Junjie Li, Wenxuan Wu, Shuai Wang, Zexu Pan, Kong Aik Lee, Helen Meng, Haizhou Li
https://arxiv.org/abs/2507.15294

MeMo: Attentional Momentum for Real-time Audio-visual Speaker Extraction under Impaired Visual Conditions
Audio-visual Target Speaker Extraction (AV-TSE) aims to isolate a target speaker's voice from multi-speaker environments by leveraging visual cues as guidance. However, the performance of AV-TSE systems heavily relies on the quality of these visual cues. In extreme scenarios where visual cues are missing or severely degraded, the system may fail to accurately extract the target speaker. In contrast, humans can maintain attention on a target speaker even in the absence of explicit auxiliary info…

On minimal conditions in semigroups and biacts
Craig Miller
https://arxiv.org/abs/2506.13617 https://arxiv.org/pdf/2506.13617

On minimal conditions in semigroups and biacts
We systematically study the minimal conditions on $\mathcal{L}$-, $\mathcal{R}$- and $\mathcal{J}$-classes, denoted by $M_L$, $M_R$ and $M_J$, as well as the related notions of left/right/two-sided stability, in semigroups and biacts. In particular, we investigate the behaviour of these conditions with respect to quotients, substructures and extensions. Among other results, the following are proved. The conditions $M_L$, $M_R$ and $M_J$ are preserved under quotients (for both semigroups and bia…

Prévoir un départ différé de 10 minutes environ pour le train suivant : - KOHO départ Melun 15h48, arrivée Montereau 16h25.
Pour plus d'informations sur cette perturbation, consultez le fil X de la ligne R.
Motif : conditions de départ non réunies.
🤖 21/07 15:15

Predicting temperature-dependent failure and transformation zones in 2D silica glass through quasistatic Gaussian Phase Packets
Miguel Sp\'inola, Shashank Saxena, Franz Bamer, Dennis M. Kochmann
https://arxiv.org/abs/2507.13960

Predicting temperature-dependent failure and transformation zones in 2D silica glass through quasistatic Gaussian Phase Packets
The athermal quasistatic (AQS) method is a powerful technique to study the mechanical behavior of disordered systems. However, its applicability is limited to temperatures near zero, where thermal activation is unlikely. In this work, we extend the AQS method to finite temperatures, based on a formulation that describes atoms as temperature-dependent Gaussian packets (GPPs) in phase space under quasistatic conditions, thus equivalent to minimum free energy conditions. This framework is used to …

The formation and evolution of dust in the colliding-wind binary Apep revealed by JWST
Yinuo Han, Ryan M. T. White, Joseph R. Callingham, Ryan M. Lau, Benjamin J. S. Pope, Noel D. Richardson, Peter G. Tuthill
https://arxiv.org/abs/2507.14498

The formation and evolution of dust in the colliding-wind binary Apep revealed by JWST
Carbon-rich Wolf-Rayet (WR) stars are significant contributors of carbonaceous dust to the galactic environment, however the mechanisms and conditions for formation and subsequent evolution of dust around these stars remain open questions. Here we present JWST observations of the WR+WR colliding-wind binary Apep which reveal an intricate series of nested concentric dust shells that are abundant in detailed substructure. The striking regularity in these substructures between successive shells su…

Rule-based Key-Point Extraction for MR-Guided Biomechanical Digital Twins of the Spine
Robert Graf, Tanja Lerchl, Kati Nispel, Hendrik M\"oller, Matan Atad, Julian McGinnis, Julius Maria Watrinet, Johannes Paetzold, Daniel Rueckert, Jan S. Kirschke
https://arxiv.org/abs/2508.14708

Rule-based Key-Point Extraction for MR-Guided Biomechanical Digital Twins of the Spine
Digital twins offer a powerful framework for subject-specific simulation and clinical decision support, yet their development often hinges on accurate, individualized anatomical modeling. In this work, we present a rule-based approach for subpixel-accurate key-point extraction from MRI, adapted from prior CT-based methods. Our approach incorporates robust image alignment and vertebra-specific orientation estimation to generate anatomically meaningful landmarks that serve as boundary conditions …

Adaptive Network Security Policies via Belief Aggregation and Rollout
Kim Hammar, Yuchao Li, Tansu Alpcan, Emil C. Lupu, Dimitri Bertsekas
https://arxiv.org/abs/2507.15163

Adaptive Network Security Policies via Belief Aggregation and Rollout
Evolving security vulnerabilities and shifting operational conditions require frequent updates to network security policies. These updates include adjustments to incident response procedures and modifications to access controls, among others. Reinforcement learning methods have been proposed for automating such policy adaptations, but most of the methods in the research literature lack performance guarantees and adapt slowly to changes. In this paper, we address these limitations and present a …

Fokker-Planck Score Learning: Efficient Free-Energy Estimation under Periodic Boundary Conditions
Daniel Nagel, Tristan Bereau
https://arxiv.org/abs/2506.15653

Fokker-Planck Score Learning: Efficient Free-Energy Estimation under Periodic Boundary Conditions
Accurate free-energy estimation is essential in molecular simulation, yet the periodic boundary conditions (PBC) commonly used in computer simulations have rarely been explicitly exploited. Equilibrium methods such as umbrella sampling, metadynamics, and adaptive biasing force require extensive sampling, while non-equilibrium pulling with Jarzynski's equality suffers from poor convergence due to exponential averaging. Here, we introduce a physics-informed, score-based diffusion framework: by ma…

A powerful procedure that controls the false discovery rate with directional information
Zhaoyang Tian, Kun Liang, Pengfei Li
https://arxiv.org/abs/2507.15631

A powerful procedure that controls the false discovery rate with directional information
In many multiple testing applications in genetics, the signs of test statistics provide useful directional information, such as whether genes are potentially up- or down-regulated between two experimental conditions. However, most existing procedures that control the false discovery rate (FDR) are $p$-value based and ignore such directional information. We introduce a novel procedure, the signed-knockoff procedure, to utilize the directional information and control the FDR in finite samples. We…

Project-connex Decompositions and Tractability of Aggregate Group-by Conjunctive Queries
Diego Figueira, Cibele Freire
https://arxiv.org/abs/2507.14101 htt…

Project-connex Decompositions and Tractability of Aggregate Group-by Conjunctive Queries
We introduce 'project-connex' tree-width as a measure of tractability for counting and aggregate conjunctive queries over semirings with 'group-by' projection (also known as 'AJAR' or 'FAQ' queries). This elementary measure allows to obtain comparable complexity bounds to the ones obtained by previous structural conditions tailored for efficient evaluation of semiring aggregate queries, enumeration algorithms of conjunctive queries, and tractability of counting answers to conjunctive queries. …

General Matching Games
Felipe Garrido-Lucero, Rida Laraki
https://arxiv.org/abs/2507.15737 https://arxiv.org/pdf/2507.15737

General Matching Games
Matching games is a one-to-one two sided market model introduced by Garrido-Lucero and Laraki, in which coupled agents' utilities are endogenously determined as the outcome of a strategic game. They refine the classical pairwise stability by requiring robustness to renegotiation and provide general conditions under which pairwise stable and renegotiation-proof outcomes exist as the limit of a deferred acceptance with competitions algorithm together with a renegotiation process. In this article,…

Well-posed geometric boundary data in General Relativity, III: conformal-volume boundary data
Zhongshan An, Michael T. Anderson
https://arxiv.org/abs/2507.15567

Well-posed geometric boundary data in General Relativity, III: conformal-volume boundary data
In this third work in a series, we prove the local-in-time well-posedness of the IBVP for the vacuum Einstein equations in general relativity with twisted DIrichlet boundary conditions on a finite timelike boundary. The boundary conditions consist of specification of the pointwise conformal class of the boundary metric, together with a scalar density involving a combination of the volume form of the bulk metric restricted to the boundary together with the volume form of the boundary metric itse…

Identifying Habitable Exoplanets with Radio Telescopes on the Lunar Farside
N. Mahesh, J. D. Bowman, J. O. Burns, S. D. Bale, T-C. Chang, S. Furlanetto, G. Hallinan, A. Hegedus, J. Mirocha, J. Pober, R. Polidan, D. Rapetti, N. Thyagarajan, J. Turner
https://arxiv.org/abs/2508.14126

Identifying Habitable Exoplanets with Radio Telescopes on the Lunar Farside
The search for habitable conditions beyond Earth is a top priority in astrophysics. The discovery of habitable exoplanets beyond our solar system will require a suite of instruments providing long-term monitoring for detection (e.g. with space and ground-based radial velocity observations), spectroscopic characterization of atmospheric and surface properties, and eventually deep chronograph-aided observations from e.g. JWST, Roman Space Telescope, and the Habitable Worlds Observatory (HWO). Det…

Missing Physics Discovery through Fully Differentiable Finite Element-Based Machine Learning
Ado Farsi, Nacime Bouziani, David A Ham
https://arxiv.org/abs/2507.15787 https://

Missing Physics Discovery through Fully Differentiable Finite Element-Based Machine Learning
Although many problems in science and engineering are modelled by well-established PDEs, they often involve unknown or incomplete relationships, such as material constitutive laws or thermal response, that limit accuracy and generality. Existing surrogate-modelling approaches directly approximate PDE solutions but remain tied to a specific geometry, boundary conditions, and set of physical constraints. To address these limitations, we introduce a fully differentiable finite element-based machin…

Lightweight Gradient Descent Optimization for Mitigating Hardware Imperfections in RIS Systems
Pedro H. C. de Souza (National Institute of Telecommunications), Luiz A. M. Pereira (National Institute of Telecommunications), Faustino R. G\'omez (National Institute of Telecommunications), Elsa M. Mater\'on (National Institute of Telecommunications), Jorge Ricardo Mej\'ia-Salazar (National Institute of Telecommunications)

Lightweight Gradient Descent Optimization for Mitigating Hardware Imperfections in RIS Systems
Ongoing discussions about the future of wireless communications are reaching a turning point as standardization activities for the sixth generation of mobile networks (6G) become more mature. New technologies must now face renewed scrutiny by the industry and academia in order to be ready for deployment in the near future. Recently, reconfigurable intelligent surfaces (RISs) gained attention as a promising solution for improving the propagation conditions of signal transmission in general. The …

Data-driven optimal approximation on Hardy spaces in simply connected domains
Alessandro Borghi, Tobias Breiten
https://arxiv.org/abs/2507.15837 https://…

Data-driven optimal approximation on Hardy spaces in simply connected domains
We consider optimal interpolation of functions analytic in simply connected domains in the complex plane. By choosing a specific structure for the approximant, we show that the resulting first order optimality conditions can be interpreted as optimal $\mathcal{H}_2$ interpolation conditions for discrete-time dynamical systems. Connections to the implicit Euler method, the midpoint method, and backward differentiation methods are also established. A data-driven algorithm is developed to compute …

We built a regulatory system for a reason - our history is replete with pipeline breaks resulting in leaks and explosions (natural gas, for example), oil well leaks and fires, chemical plant releases, exposure of workers to hazardous conditions. We have seen over and over again how industry's cost cutting ends up killing and injuring people. Yet the #GOP is bound and determined to gut the policies …

We built a regulatory system for a reason - our history is replete with pipeline breaks resulting in leaks and explosions (natural gas, for example), oil well leaks and fires, chemical plant releases, exposure of workers to hazardous conditions. We have seen over and over again how industry's cost cutting ends up killing and injuring people. Yet the #GOP is bound and determined to gut the policies …

The Pickett fire, exploded in size on Thursday as it burned in a remote area of Napa county, and covered more than 2,100 acres by Friday morning.
Evacuation orders and warnings have been issued Thursday for hundreds of residents around Calistoga, a small city in the region known for its wine,
as firefighters faced challenging conditions, working through dangerously high temperatures and rugged terrain.
The fire’s perimeter is 0% contained.

Well-posedness for path-dependent multivalued McKean-Vlasov stochastic differential equations
Ying Ma, Huijie Qiao
https://arxiv.org/abs/2508.15301 https://

Well-posedness for path-dependent multivalued McKean-Vlasov stochastic differential equations
This work concerns a type of path-dependent multivalued McKean-Vlasov stochastic differential equations. First of all, we prove the well-posedness for path-dependent multivalued stochastic differential equations under the Lipschitz conditions. Then by constructing Lipschitz approximation sequences, we generalize the result to the case of the non-Lipschitz conditions. Finally, based on the obtained results, the well-posedness for path-dependent multivalued McKean-Vlasov stochastic differential e…

Towards a 3D Transfer-based Black-box Attack via Critical Feature Guidance
Shuchao Pang, Zhenghan Chen, Shen Zhang, Liming Lu, Siyuan Liang, Anan Du, Yongbin Zhou
https://arxiv.org/abs/2508.15650

Towards a 3D Transfer-based Black-box Attack via Critical Feature Guidance
Deep neural networks for 3D point clouds have been demonstrated to be vulnerable to adversarial examples. Previous 3D adversarial attack methods often exploit certain information about the target models, such as model parameters or outputs, to generate adversarial point clouds. However, in realistic scenarios, it is challenging to obtain any information about the target models under conditions of absolute security. Therefore, we focus on transfer-based attacks, where generating adversarial poin…

A Proof System with Causal Labels (Part I): checking Individual Fairness and Intersectionality
Leonardo Ceragioli, Giuseppe Primiero
https://arxiv.org/abs/2507.14650

A Proof System with Causal Labels (Part I): checking Individual Fairness and Intersectionality
In this article we propose an extension to the typed natural deduction calculus TNDPQ to model verification of individual fairness and intersectionality in probabilistic classifiers. Their interpretation is obtained by formulating specific conditions for the application of the structural rule of Weakening. Such restrictions are given by causal labels used to check for conditional independence between protected and target variables.

Inserting Planar-Measured Qubits into MBQC Patterns while Preserving Flow
Miriam Backens (Universit\'e de Lorraine, CNRS, Inria, LORIA, F-54000 Nancy, France), Thomas Perez (Inria, Palaiseau, France, LIX, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France, CPHT, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris, Palaiseau, France)

Inserting Planar-Measured Qubits into MBQC Patterns while Preserving Flow
In the one-way model of measurement-based quantum computation (MBQC), computation proceeds via single-qubit measurements on a resource state. Flow conditions ensure that the overall computation is deterministic in a suitable sense, and are required for efficient translation into quantum circuits. Procedures that rewrite MBQC patterns -- e.g. for optimisation, or adapting to hardware constraints -- thus need to preserve the existence of flow. Most previous work has focused on rewrites that reduc…

Low-Latency Event-Based Velocimetry for Quadrotor Control in a Narrow Pipe
Leonard Bauersfeld, Davide Scaramuzza
https://arxiv.org/abs/2507.15444 https://

Low-Latency Event-Based Velocimetry for Quadrotor Control in a Narrow Pipe
Autonomous quadrotor flight in confined spaces such as pipes and tunnels presents significant challenges due to unsteady, self-induced aerodynamic disturbances. Very recent advances have enabled flight in such conditions, but they either rely on constant motion through the pipe to mitigate airflow recirculation effects or suffer from limited stability during hovering. In this work, we present the first closed-loop control system for quadrotors for hovering in narrow pipes that leverages real-ti…

Space of conformal boundary conditions from the view of higher Berry phase: Flow of Berry curvature in parametrized BCFTs
Xueda Wen
https://arxiv.org/abs/2507.12546

Space of conformal boundary conditions from the view of higher Berry phase: Flow of Berry curvature in parametrized BCFTs
In this work, we study the connection between two subjects: the space of conformal boundary conditions in boundary conformal field theories (BCFTs) and the space of gapped systems characterized by higher Berry phases. We explore this connection by analyzing multi-parameter spectral flow in Dirac fermion BCFTs with continuously parametrized conformal boundary conditions, which are introduced by coupling a CFT to a family of gapped systems. When the gapped systems belong to a nontrivial higher Be…

Effects of Cognitive Distraction and Driving Environment Complexity on Adaptive Cruise Control Use and Its Impact on Driving Performance: A Simulator Study
Ana\"is Halin, Marc Van Droogenbroeck, Christel Devue
https://arxiv.org/abs/2507.13886

Effects of Cognitive Distraction and Driving Environment Complexity on Adaptive Cruise Control Use and Its Impact on Driving Performance: A Simulator Study
In this simulator study, we adopt a human-centered approach to explore whether and how drivers' cognitive state and driving environment complexity influence reliance on driving automation features. Besides, we examine whether such reliance affects driving performance. Participants operated a vehicle equipped with adaptive cruise control (ACC) in a simulator across six predefined driving scenarios varying in traffic conditions while either performing a cognitively demanding task (i.e., respondin…

Dynamic Transmission Line Switching Amidst Wildfire-Prone Weather Under Decision-Dependent Uncertainty
Juan-Alberto Estrada-Garcia, Ruiwei Jiang, Alexandre Moreira
https://arxiv.org/abs/2507.13611

Dynamic Transmission Line Switching Amidst Wildfire-Prone Weather Under Decision-Dependent Uncertainty
During dry and windy seasons, environmental conditions significantly increase the risk of wildfires, exposing power grids to disruptions caused by transmission line failures. Wildfire propagation exacerbates grid vulnerability, potentially leading to prolonged power outages. To address this challenge, we propose a multi-stage optimization model that dynamically adjusts transmission grid topology in response to wildfire propagation, aiming to develop an optimal response policy. By accounting for…

Homotopy classification of $S^{2k-1}$-bundles over $S^{2k}$
Zhongjian Zhu, Jianzhong Pan
https://arxiv.org/abs/2508.14341 https://arxiv.org/pdf/2508.14341

Homotopy classification of $S^{2k-1}$-bundles over $S^{2k}$
In this paper, we classify the homotopy types of the total spaces of $S^{2k-1}$-bundles (or fibrations) over $S^{2k}$ for $2\leq k\leq 6$ by listing the attaching map of the top cell of these as CW-complexes. The method is using the new necessary and sufficient conditions we gave in our previous work to determine whether a CW complex has the homotopy type of total space of these sphere bundles.

Variable Min-Cut Max-Flow Bounds and Algorithms in Finite Regime
Rivka Gitik, Alejandro Cohen
https://arxiv.org/abs/2507.14852 https://

Variable Min-Cut Max-Flow Bounds and Algorithms in Finite Regime
The maximum achievable capacity from source to destination in a network is limited by the min-cut max-flow bound; this serves as a converse limit. In practice, link capacities often fluctuate due to dynamic network conditions. In this work, we introduce a novel analytical framework that leverages tools from computational geometry to analyze throughput in heterogeneous networks with variable link capacities in a finite regime. Within this model, we derive new performance bounds and demonstrate t…

Weak Fan Structures for Two-Parameter Degenerations of K3 Surfaces
Badre Mounda
https://arxiv.org/abs/2507.14954 https://arxiv.org/pd…

Weak Fan Structures for Two-Parameter Degenerations of K3 Surfaces
In this note, we provide an explicit computation of the weak fan associated with a two-parameter degeneration of K3 surfaces. This example serves as a concrete illustration of the general framework developed by Robles and Deng (2023) for the compactification of period maps via nilpotent orbits in the non-Hermitian case. We describe the associated nilpotent cones, examine their compatibility conditions, and construct the weak fan governing the degeneration behavior. This computation contributes …

Le train suivant voit son départ différé de 20 minutes environ :
-POMA départ Montargis 18h02, arrivée Paris Gare de Lyon 19h44
Pour plus d'informations sur cette perturbation, consultez le fil Twitter de la ligne.
Motif : conditions de départ non réunies.
🤖 22/06 18:18

Evolving magnetic lives of Sun-like stars. I. Characterisation of the large-scale magnetic field with Zeeman-Doppler imaging
S. Bellotti, T. Lueftinger, S. Boro Saikia, C. P. Folsom, P. Petit, J. Morin, M. Gudel, J. -F. Donati, E. Alecian
https://arxiv.org/abs/2507.14861

Evolving magnetic lives of Sun-like stars. I. Characterisation of the large-scale magnetic field with Zeeman-Doppler imaging
Planets orbiting young, solar-type stars are embedded in a more energetic environment than that of the solar neighbourhood. They experience harsher conditions due to enhanced stellar magnetic activity and wind shaping the secular evolution of a planetary atmosphere. This study is dedicated to the characterisation of the magnetic activity of eleven Sun-like stars, with ages between 0.2 and 6.1 Gyr and rotation periods between 4.6 and 28.7 d. Based on a sub-sample of six stars, we aim to study th…

The role of three-dimensional effects on ion injection and acceleration in perpendicular shocks
Luca Orusa, Damiano Caprioli, Lorenzo Sironi, Anatoly Spitkovsky
https://arxiv.org/abs/2507.13436

The role of three-dimensional effects on ion injection and acceleration in perpendicular shocks
Understanding the conditions that enable particle acceleration at non-relativistic collisionless shocks is essential to unveil the origin of cosmic rays. We employ 2D and 3D hybrid simulations (with kinetic ions and fluid electrons) to explore particle acceleration and magnetic field amplification in non-relativistic perpendicular shocks, focusing on the role of shock drift acceleration and its dependence on the shock Mach number. We perform an analysis of the ion injection process and demonstr…

Deformations of Standard Locally Homogeneous Spaces
Kazuki Kannaka, Toshiyuki Kobayashi
https://arxiv.org/abs/2507.14832 https://arxi…

Deformations of Standard Locally Homogeneous Spaces
Let $X=G/H$ be a homogeneous space, where $G \supset H$ are reductive Lie groups. We ask: in the setting where $Γ\backslash G/H$ is a standard quotient, to what extent can the discrete subgroup $Γ$ be deformed while preserving the proper discontinuity of the $Γ$-action on $X$? We provide several classification results, including: conditions under which local rigidity holds for compact standard quotients $Γ\backslash X$; criteria for when a standard quotient can be deformed into a nonstand…

PB-IAD: Utilizing multimodal foundation models for semantic industrial anomaly detection in dynamic manufacturing environments
Bernd Hofmann, Albert Scheck, Joerg Franke, Patrick Bruendl
https://arxiv.org/abs/2508.14504

PB-IAD: Utilizing multimodal foundation models for semantic industrial anomaly detection in dynamic manufacturing environments
The detection of anomalies in manufacturing processes is crucial to ensure product quality and identify process deviations. Statistical and data-driven approaches remain the standard in industrial anomaly detection, yet their adaptability and usability are constrained by the dependence on extensive annotated datasets and limited flexibility under dynamic production conditions. Recent advances in the perception capabilities of foundation models provide promising opportunities for their adaptatio…

Efficient and Scalable Self-Healing Databases Using Meta-Learning and Dependency-Driven Recovery
Joydeep Chandra, Prabal Manhas
https://arxiv.org/abs/2507.13757

Efficient and Scalable Self-Healing Databases Using Meta-Learning and Dependency-Driven Recovery
This study explored the development of a novel self-healing framework for databases using meta-learning and reinforcement learning techniques. The primary objective was to address the challenges of real-time adaptability and minimal retraining in dynamic workload environments. The proposed approach integrated Model-Agnostic Meta-Learning (MAML) with reinforcement learning to enable anomaly detection and corrective actions that adapted swiftly to evolving database conditions. Multi-objective opt…

Exploring the Landscape of Non-Equilibrium Memories with Neural Cellular Automata
Ethan Lake, Ehsan Pajouheshgar
https://arxiv.org/abs/2508.15726 https://a…

Exploring the Landscape of Non-Equilibrium Memories with Neural Cellular Automata
We investigate the landscape of many-body memories: families of local non-equilibrium dynamics that retain information about their initial conditions for thermodynamically long time scales, even in the presence of arbitrary perturbations. In two dimensions, the only well-studied memory is Toom's rule. Using a combination of rigorous proofs and machine learning methods, we show that the landscape of 2D memories is in fact quite vast. We discover memories that correct errors in ways qualitatively…

Propagation Channel Modeling for LEO Satellite Missions Using Ray-Tracing Simulations
Wahab Khawaja, Ismail Guvenc, Rune Hylsberg Jacobsen
https://arxiv.org/abs/2507.14622

Propagation Channel Modeling for LEO Satellite Missions Using Ray-Tracing Simulations
This work presents a high-resolution, ray-tracing-based channel modeling for Low Earth Orbit (LEO) satellite-to-ground links in a suburban environment at X-band. Using simulations conducted in Wireless InSite, we develop a parametric channel model that characterizes both large- and small-scale fading effects across different satellite elevation angles. Large-scale fading incorporates attenuation due to terrain-induced shadowing and dynamic environmental factors such as weather conditions, and i…

A Universal Vehicle-Trailer Navigation System with Neural Kinematics and Online Residual Learning
Yanbo Chen, Yunzhe Tan, Yaojia Wang, Zhengzhe Xu, Junbo Tan, Xueqian Wang
https://arxiv.org/abs/2507.15607

A Universal Vehicle-Trailer Navigation System with Neural Kinematics and Online Residual Learning
Autonomous navigation of vehicle-trailer systems is crucial in environments like airports, supermarkets, and concert venues, where various types of trailers are needed to navigate with different payloads and conditions. However, accurately modeling such systems remains challenging, especially for trailers with castor wheels. In this work, we propose a novel universal vehicle-trailer navigation system that integrates a hybrid nominal kinematic model--combining classical nonholonomic constraints …

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Kai Klink, Andrew Raj Kirkpatrick, Yukihiro Tadokoro, Jonas Nils Becker, Shannon Singer Nicley
https://arxiv.org/abs/2507.14047

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Nitrogen-vacancy (NV) centers in diamond are widely recognized as highly promising solid-state quantum sensors due to their long room temperature coherence times and atomic-scale size, which enable exceptional sensitivity and nanoscale spatial resolution under ambient conditions. Ultrafast laser writing has demonstrated the deterministic spatial control of individual NV$^-$ centers, however, the resulting random orientation of the defect axis limits the magnetic field sensitivity and signal con…

Exact solutions to complex Type IIB supergravity for complex superalgebra $F(4)$ and its real forms
Eric D'Hoker, Michael Gutperle, Christoph F. Uhlemann
https://arxiv.org/abs/2508.14959

Exact solutions to complex Type IIB supergravity for complex superalgebra $F(4)$ and its real forms
We construct the general local solutions to complexified Type IIB supergravity which are invariant under the complexified Lie superalgebra $F(4)$. The geometry is a product of complexified maximally symmetric spaces $\mathcal M_{6 {\mathbb C}}$ and $\mathcal M_{2 {\mathbb C}}$ warped over a complexified surface $Σ_{\mathbb C}$. We classify the reality conditions that may be imposed consistently to obtain real form solutions within real forms of complex Type IIB supergravity. The latter compris…

WorldWeaver: Generating Long-Horizon Video Worlds via Rich Perception
Zhiheng Liu, Xueqing Deng, Shoufa Chen, Angtian Wang, Qiushan Guo, Mingfei Han, Zeyue Xue, Mengzhao Chen, Ping Luo, Linjie Yang
https://arxiv.org/abs/2508.15720

WorldWeaver: Generating Long-Horizon Video Worlds via Rich Perception
Generative video modeling has made significant strides, yet ensuring structural and temporal consistency over long sequences remains a challenge. Current methods predominantly rely on RGB signals, leading to accumulated errors in object structure and motion over extended durations. To address these issues, we introduce WorldWeaver, a robust framework for long video generation that jointly models RGB frames and perceptual conditions within a unified long-horizon modeling scheme. Our training fra…

Le train suivant voit son départ différé de 30 minutes environ :
- KUMO départ de Paris Gare de Lyon Š 19h46, arrivée Š Montereau 20h44.
Pour plus d'informations sur cette perturbation, consultez le fil Twitter de la ligne.
Motif : conditions de départ non réunies.
🤖 21/06 19:40

Mean field social optimization: feedback person-by-person optimality and the dynamic programming equation
Minyi Huang, Shuenn-Jyi Sheu, Li-Hsien Sun
https://arxiv.org/abs/2508.14236

Mean field social optimization: feedback person-by-person optimality and the dynamic programming equation
We consider mean field social optimization in nonlinear diffusion models. By dynamic programming with a representative agent employing cooperative optimizer selection, we derive a new Hamilton--Jacobi--Bellman (HJB) equation to be called the master equation of the value function. Under some regularity conditions, we establish $ε$-person-by-person optimality of the master equation-based control laws, which may be viewed as a necessary condition for nearly attaining the social optimum. A major c…

Apparent horizon and causal structure of spacetime singularities
Koushiki, Pankaj S. Joshi
https://arxiv.org/abs/2508.14663 https://arxiv.org/pdf/2508.1466…

Apparent horizon and causal structure of spacetime singularities
A major issue in general relativity and blackhole physics today is to determine the conditions when the spacetime singularities forming as end-states of gravitational collapse are visible to external observers, and when these are hidden within the event horizon of a black-hole. We show here that such a causal structure of singularity, in terms of its visibility or otherwise, is determined by the dynamics of the apparent horizon and trapped surfaces forming during collapse of massive matter clou…

Adaptive time-domain boundary element methods for the wave equation with Neumann boundary conditions
Alessandra Aimi, Giulia Di Credico, Heiko Gimperlein, Chiara Guardasoni
https://arxiv.org/abs/2508.12332

Adaptive time-domain boundary element methods for the wave equation with Neumann boundary conditions
This article investigates adaptive mesh refinement procedures for the time-domain wave equation with Neumann boundary conditions, formulated as an equivalent hypersingular boundary integral equation. Space-adaptive and time-adaptive versions of a space-time boundary element method are presented, based on a reliable a posteriori error estimate of residual type. Numerical experiments illustrate the performance of the proposed approach.

Variations of the Ca II K Line Profile Parameters with Solar Latitude and Time Observed from Kodaikanal Solar Observatory
Apoorva Srinivasa (Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri, India), Anu Sreedevi (Department of Physics, Indian Institute of Technology), K P Raju (Indian Institute of Astrophysics, Bengaluru, India), K Nagaraju (Indian Institute of Astrophysics, Bengaluru, India), Jagdev Singh (Indian Institute of Astrophysics, Bengaluru, India), Narayanankutt…

Variations of the Ca II K Line Profile Parameters with Solar Latitude and Time Observed from Kodaikanal Solar Observatory
The Calcium-K line profiles as functions of solar latitude and time were obtained through our observations from the Kodaikanal Solar Observatory using the solar tunnel telescope and spectrograph with a CCD detector. Observations were conducted on all days with favourable sky conditions. We analysed the data collected over a period of about ten years to study the variations in the Ca II K line profiles recorded between 2015 and 2024, of which 709 days of data were found useful. The temporal and …

Mag-Match: Magnetic Vector Field Features for Map Matching and Registration
William McDonald, Cedric Le Gentil, Jennifer Wakulicz, Teresa Vidal-Calleja
https://arxiv.org/abs/2508.15300

Mag-Match: Magnetic Vector Field Features for Map Matching and Registration
Map matching and registration are essential tasks in robotics for localisation and integration of multi-session or multi-robot data. Traditional methods rely on cameras or LiDARs to capture visual or geometric information but struggle in challenging conditions like smoke or dust. Magnetometers, on the other hand, detect magnetic fields, revealing features invisible to other sensors and remaining robust in such environments. In this paper, we introduce Mag-Match, a novel method for extracting an…

Electron-neutrino lepton number crossings: variations with the supernova core physics
Marie Cornelius (Niels Bohr Institute), Irene Tamborra (Niels Bohr Institute), Malte Heinlein (MPI Astrophysics, TUM), Shashank Shalgar (Niels Bohr Institute), Hans-Thomas Janka (MPI Astrophysics)
https://arxiv.org/abs/2507.13429

Electron-neutrino lepton number crossings: variations with the supernova core physics
A crucial ingredient affecting fast neutrino flavor conversion in core-collapse supernovae (SNe) is the shape of the angular distribution of the electron-neutrino lepton number (ELN). The presence of an ELN crossing signals favorable conditions for flavor conversion. However, the dependence of ELN crossings on the SN properties is only partially understood. We investigate a suite of 12 spherically symmetric neutrino-hydrodynamics simulations of the core collapse of a SN with a mass of $18.6 M_\…

Microscopic Theory of Squeezed Light in Quantum Dot Systems
Sahil Patel, Sean Doan, Chen Shang, Frederic Grillot, Frank Jahnke, John Bowers, Galan Moody, Weng Chow
https://arxiv.org/abs/2508.15114

Microscopic Theory of Squeezed Light in Quantum Dot Systems
We present a cavity-QED theory for generating squeezed light from semiconductor quantum dots (QDs) integrated in microcavities. We formulate equations of motion for an inhomogeneously broadened QD ensemble that is incoherently pumped and simultaneously driven by a coherent seed field, solve for steady states, and compute the output-field quadrature variances. The analysis identifies operating conditions that yield amplitude-quadrature squeezing, with photon-number fluctuations reduced below the…

Harvard Divinity School broke precedent
by refusing to publish a video of its commencement speech
after a speaker went off-script to call attention to the perilous conditions in Gaza.
“There are no safe zones left in Gaza after 600 days and 77 years of genocide,” said Zehra Imam,
who graduated from the Harvard Divinity School this spring and participated in the embattled Religion and Public Life program.
Imam, who is Muslim, was speaking with two other students f…

A Harvard Commencement Speaker Mentioned Gaza. The School Refused to Publish Her Speech.
Divinity School insiders said Harvard’s practices are at odds with the public perception that the university is fighting Trump.

Jordanian spin chains for twisted strings in $AdS_5\times S^5$
Sibylle Driezen, Adrien Molines
https://arxiv.org/abs/2507.13911 https://

Jordanian spin chains for twisted strings in $AdS_5\times S^5$
We study the integrable spin chain formulation of Jordanian deformations of the $AdS_5\times S^5$ superstring, realised via Drinfel'd twists. Among these models, we first identify a unique supergravity deformation confined to an $SL(2,\mathbb{R})$ sector and with constant dilaton. We then develop a general framework for closed Drinfel'd twisted spin chains and construct an explicit map to undeformed models with twisted-boundary conditions. Applied to the non compact $\mathrm{XXX}_{-1/2}$ spin c…

Stabilization of jump-diffusion stochastic differential equations by hysteresis switching
Weichao Liang, Gaoyue Guo
https://arxiv.org/abs/2507.15191 https:…

Stabilization of jump-diffusion stochastic differential equations by hysteresis switching
We address the stabilization of both classical and quantum systems modeled by jump-diffusion stochastic differential equations using a novel hysteresis switching strategy. Unlike traditional methods that depend on global Lyapunov functions or require each subsystem to stabilize the target state individually, our approach employs local Lyapunov-like conditions and state-dependent switching to achieve global asymptotic or exponential stability with finitely many switches almost surely. We rigorou…

Inflationary Slow-Roll Parameters in the Jordan Frame for Cosmological F(R) Gravity Models
Vsevolod R. Ivanov
https://arxiv.org/abs/2508.14250 https://arxi…

Inflationary Slow-Roll Parameters in the Jordan Frame for Cosmological F(R) Gravity Models
$F(R)$ inflationary models are analyzed without the Weyl transformation to the Einstein frame. Sufficient conditions for existence of global inflationary attractors in $F(R)$ models are provided. Following that, the procedure for calculating inflationary observables completely in the original, Jordan, frame is given. The described procedure is used to analyze a new $F(R)$ inflationary model (a one-parameter deformation of the Starobinsky model), which is shown to provide predictions in good agr…

Chemical Diagnostics for Tracing the Physical Structures in Disk-Forming Regions
Yoko Oya
https://arxiv.org/abs/2507.15371 https://ar…

Chemical Diagnostics for Tracing the Physical Structures in Disk-Forming Regions
To understand the chemical origin of the Solar system, the chemical evolution along the star/planet formation is a key issue. Extensive observational studies have demonstrated a chemical diversity in young low-mass protostellar sources so far. Furthermore, chemical differentiations in the vicinity of the protostars have recently been reported. This suggests that molecular distribution is sensitive to a change in the physical conditions associated with disk formation. Some kinds of molecular lin…

Lang2Lift: A Framework for Language-Guided Pallet Detection and Pose Estimation Integrated in Autonomous Outdoor Forklift Operation
Huy Hoang Nguyen, Johannes Huemer, Markus Murschitz, Tobias Glueck, Minh Nhat Vu, Andreas Kugi
https://arxiv.org/abs/2508.15427

Lang2Lift: A Framework for Language-Guided Pallet Detection and Pose Estimation Integrated in Autonomous Outdoor Forklift Operation
The logistics and construction industries face persistent challenges in automating pallet handling, especially in outdoor environments with variable payloads, inconsistencies in pallet quality and dimensions, and unstructured surroundings. In this paper, we tackle automation of a critical step in pallet transport: the pallet pick-up operation. Our work is motivated by labor shortages, safety concerns, and inefficiencies in manually locating and retrieving pallets under such conditions. We prese…

Moment-enhanced shallow water equations for non-slip boundary conditions
Shiping Zhou, Juntao Huang, Andrew J. Christlieb
https://arxiv.org/abs/2506.14785 …

Moment-enhanced shallow water equations for non-slip boundary conditions
The shallow water equations often assume a constant velocity profile along the vertical axis. However, this assumption does not hold in many practical applications. To better approximate the vertical velocity distribution, models such as the shallow water moment expansion models have been proposed. Nevertheless, under non-slip bottom boundary conditions, both the standard shallow water equation and its moment-enhanced models struggle to accurately capture the vertical velocity profile due to th…

Analysis and experimental validation of decentralized controllers for delayed spacing policies in vehicle-platooning
Paul Wijnbergen, Redmer de Haan, Erjen Lefeber
https://arxiv.org/abs/2508.14587

Analysis and experimental validation of decentralized controllers for delayed spacing policies in vehicle-platooning
In this paper, a novel approach to spacing policies for vehicle platoons and a framework for control design is presented. Whereas traditional approaches aim to mitigate the effect of actuation and communication delays on the spacing error, this paper presents spacing policies that account for delays. A framework for decentralized control design is presented and necessary and sufficient conditions for tracking of delayed-based spacing policies are stated. It is shown that due to the control desi…

Evolving Wormholes in a Cosmological Background
Mahdi Kord Zangeneh, Francisco S. N. Lobo
https://arxiv.org/abs/2507.14750 https://ar…

Evolving Wormholes in a Cosmological Background
Wormholes are non-trivial topological structures that arise as exact solutions to Einstein's field equations, theoretically connecting distinct regions of spacetime via a throat-like geometry. While static traversable wormholes necessarily require exotic matter that violates the classical energy conditions, subsequent studies have sought to minimize such violations by introducing time-dependent geometries embedded within cosmological backgrounds. This review provides a comprehensive survey of e…

Conformal Contraction for Robust Nonlinear Control with Distribution-Free Uncertainty Quantification
Sihang Wei, Melkior Ornik, Hiroyasu Tsukamoto
https://arxiv.org/abs/2507.13613

Conformal Contraction for Robust Nonlinear Control with Distribution-Free Uncertainty Quantification
We present a novel robust control framework for continuous-time, perturbed nonlinear dynamical systems with uncertainty that depends nonlinearly on both the state and control inputs. Unlike conventional approaches that impose structural assumptions on the uncertainty, our framework enhances contraction-based robust control with data-driven uncertainty prediction, remaining agnostic to the models of the uncertainty and predictor. We statistically quantify how reliably the contraction conditions …