Tootfinder

Raiders’ Rookie Duo Gets Honest About Transition to NFL https://heavy.com/sports/nfl/las-vegas-raiders/charles-grant-caleb-rogers-nfl-transition/?adt_ei=[email]

Model-theoretic Forcing in Transition Algebra
Go Hashimoto, Daniel G\u{a}in\u{a}
https://arxiv.org/abs/2506.22828 https://arxiv.org/p…

Model-theoretic Forcing in Transition Algebra
We study Löwenheim-Skolem and Omitting Types theorems in Transition Algebra, a logical system obtained by enhancing many sorted first-order logic with features from dynamic logic. The sentences we consider include compositions, unions, and transitive closures of transition relations, which are treated similarly to actions in dynamic logics to define necessity and possibility operators. We show that Upward Löwenheim-Skolem theorem, any form of compactness, and joint Robinson consistency proper…

#Energie #Energiewende Am 12.7. macht die @… mal wieder Onlinevortrag, dieses mal aber für ein internationales Publikum. Darum einmal vormittags und ein…

Highly recommended reading. Europe's automotive industry was already in transition before electrification emerged, but it missed the boat when it arrived. However, it [industry & workforce] still has plenty of opportunities, particularly in the mass market.
https://www.

Europe’s Car Industry in Transition: Stuck in Neutral or Shifting into Gear?
Europe’s automotive industry is entering a decisive decade but lacks a clear map for navigating it. While global competitors accelerate their shift toward electric vehicles, Europe’s strategic focus remains clouded by fragmented interests, path dependencies, and short-term pressures.

Transition from Optically Excited to Intrinsic Spin Polarization in WSe$_2$
Sebastian Hedwig, Gregor Zinke, J\"urgen Braun, Benito Arnoldi, Aki Pulkkinen, J\'an Min\'ar, Hubert Ebert, Martin Aeschlimann, Benjamin Stadtm\"uller
https://arxiv.org/abs/2506.00161

Transition from Optically Excited to Intrinsic Spin Polarization in WSe$_2$
Layered 2D van der Waals materials, such as transition metal dichalcogenides, are promising for nanoscale spintronic and optoelectronic applications. Harnessing their full potential requires understanding both intrinsic transport and the dynamics of optically excited spin and charge carriers -- particularly the transition between excited spin polarization and the conduction band's intrinsic spin texture. Here, we investigate the spin polarization of the conduction bands of bulk WSe$_2$ using st…

QCD phase transition at finite temperature and chemical potential with the non-extensive statistics
Zhi-Ying Qin, Jia-Hao Shi, Jin-Peng Zhang, Jian Cao, Bo Feng, Wen-Chao Zhang, Hua Zheng, Shi-Jun Mao
https://arxiv.org/abs/2507.00731

QCD phase transition at finite temperature and chemical potential with the non-extensive statistics
With the application of the non-extensive correction to the equation of state (EoS) in the parton (hadron resonance) gas at high (low) temperature and a smooth interpolation of these two equation of states, a non-extensive version of EoS is constructed to investigate the properties of quantum chromodynamics (QCD) phase transition at finite temperature ($T$) and chemical potential ($μ$). It is based on non-extensive statistics and characterized by a non-extensivity parameter $q$, which measures…

DNA Unzipping Transition
Somendra M. Bhattacharjee
https://arxiv.org/abs/2506.24064 https://arxiv.org/pdf/2506.24064

DNA Unzipping Transition
This review focuses on the force-induced unzipping transition of double-stranded DNA. It begins with a brief history of DNA melting, which emerged alongside the growth of the field of molecular biology, juxtaposed with the advancements in physics during the same post-World War II period. The earlier theories of melting of DNA were based on the Ising model and its modifications, but gradually moved towards polymer-based models. The idea of force-induced unzipping was first introduced in 1999 as …

Thick-to-thin disc transition and gas disc shrinking induced by the Gaia-Sausage-Enceladus merger
Natsuki Funakoshi, Daisuke Kawata, Jason L. Sanders, Ioana Ciuc\u{a}, Robert J. J. Grand, HanYuan Zh\=ang
https://arxiv.org/abs/2507.22979

Thick-to-thin disc transition and gas disc shrinking induced by the Gaia-Sausage-Enceladus merger
Understanding the Milky Way disc formation requires characterising its structural and kinematic properties as functions of stellar age. Using red giant stars from APOGEE DR17 and Gaia DR3, we model the age-dependent stellar kinematics with a quasi-isothermal distribution function and fit disc parameters as a function of age using non-parametric splines. We identify a transition from thick to thin disc populations around 10 Gyr ago. Stars older than this have short scale lengths ($\sim$1.7 kpc),…

Phase transition for Minesweeper
Baptiste Louf
https://arxiv.org/abs/2506.01634 https://arxiv.org/pdf/2506.01634

Phase transition for Minesweeper
We prove a coarse phase transition for the game of Minesweeper: above a certain critical mine density, the game becomes unsolvable with high probability, whereas below the critical mine density it can be solved with a linear time algorithm.

Density of spectral gap property for positively expansive dynamics and smooth potentials, with applications to the phase transition problem
Thiago Bomfim, Victor Carneiro
https://arxiv.org/abs/2505.23934

Density of spectral gap property for positively expansive dynamics and smooth potentials, with applications to the phase transition problem
It is known that all uniformly expanding dynamics $f: M \rightarrow M$ have no phase transition with respect to a Hölder continuous potential $ϕ: M \rightarrow \mathbb{R}$, in other words, the topological pressure function $\mathbb{R} \ni t \mapsto P_{top}(f , tϕ)$ is analytical. Moreover, the associated transfer operator $\mathcal{L}_{f , tϕ}$, acting on the space of Hölder continuous functions, has the spectral gap property for $t \in \mathbb{R}$. For dynamics that are topologically conj…

First-principles study of Rh- and Pd-based kagome-layered shandites
Luca Buiarelli, Turan Birol, Brian M. Andersen, Morten H. Christensen
https://arxiv.org/abs/2507.23329 https:…

First-principles study of Rh- and Pd-based kagome-layered shandites
The shandite structure hosts transition metals arranged in kagome layers stacked rhombohedrally, and interspersed with post-transition metal ions and chalcogens. The electronic states near the Fermi level are dominated by the transition metal $d$-orbitals and feature saddle points near several of the high-symmetry positions of the Brillouin zone, most notably the F and L points. Combining symmetry considerations with ab initio methods, we study the electronic and structural properties of these …

Gravitational photon echo
Wen-Te Liao, Sven Ahrens
https://arxiv.org/abs/2507.00533 https://arxiv.org/pdf/2507.00533

Gravitational photon echo
The generation, controls, and storage of the gravitationally induced photon echo using the 8.4 eV Thorium-229 nuclear clock transition on Earth are theoretically investigated. With its exceptionally narrow linewidth of approximately 1 mHz and high quality factor in the order of $10^{19}$, the Thorium-229 clock transition allows for the potential detection of gravitational-redshift effects at millimeter-scale altitude variations. Moreover, the 1740-second half lifetime of the Thorium-229 isomeri…

Probing the transition from classical to quantum radiation reaction in relativistic plasma
Haidar Al-Naseri, Gert Brodin
https://arxiv.org/abs/2506.22577 h…

Probing the transition from classical to quantum radiation reaction in relativistic plasma
We study the transition from classical radiation reaction, described by the Landau-Lifshitz model, to the quantum mechanical regime. The plasma is subject to a circularly polarized field where the self-consistent plasma current is the source of the electromagnetic field through Ampere's law. The radiation reaction implies wave energy loss, frequency up-conversion, and a modified distribution function. Increasing the value of the quantum $χ$-parameter, the quantum results gradually differ from …

High-order QED correction impacts on phase transition of the Euler-Heisenberg dS spacetime
Shan-Xia Bao, Meng-Sen Ma, Huai-Fan Li, Yun-Zhi Du
https://arxiv.org/abs/2507.23198 ht…

High-order QED correction impacts on phase transition of the Euler-Heisenberg dS spacetime
Recent studies have demonstrated that AdS black holes possess the basic characteristics of a standard thermodynamic system. Concurrently, the thermodynamic properties of spacetimes featuring multiple horizons with distinct radiation temperatures have also attracted research interest. In this work, considering the high-order quantum electrodynamics (QED) correction, we initially establish an equivalent thermodynamic system for the coexistence region of black hole and cosmological horizons. On th…

"EV battery recycling key to easing future lithium supply constraints, modeling study shows"
#EV #ElectricVehicle #Cars

EV battery recycling key to easing future lithium supply constraints, modeling study shows
Lightweight, powerful lithium-ion batteries are crucial for the transition to electric vehicles, and global demand for lithium is set to grow rapidly over the next 25 years. A new analysis from the University of California, Davis, published May 29 in Nature Sustainability, looks at how new mining operations and battery recycling could meet that demand. Recycling could play a big role in easing supply constraints, the researchers found.

I wonder how long before our new Federal Concentration Camps will become Federal Death Camps?
Looking at the photos of the Alligator Auschwitz it seems like that transition is not that far away.

Evidence for enhanced mass transfer in the disc preceding the transition to the soft state in MAXI J1820 070
Pengcheng Yang, Guobao Zhang, David M. Russell, Mariano M\'endez, M. Cristina Baglio, Diego Altamirano, Yijung Yang, Payaswini Saikia, Kevin Alabarta
https://arxiv.org/abs/2507.00532

Evidence for enhanced mass transfer in the disc preceding the transition to the soft state in MAXI J1820+070
We investigate the 2018-2019 main outburst and the subsequent mini-outbursts of the black hole low-mass X-ray binary MAXI J1820+070 using optical/ultraviolet data from the Las Cumbres Observatory (LCO), the American Association of Variable Star Observers (AAVSO), and $\textit{Swift}$/UVOT, as well as X-ray data from $\textit{Insight}$-HXMT and $\textit{Swift}$/XRT. Given the high-cadence observations, we identify a broad dip-like feature in both the optical and X-ray light curves preceding the …

From this year on, ESWC will be under the umbrella of SWSA, the Semantic Web Science Association, to secure financial sustainability for the upcoming years after its previous supporting organisation STI was dissolved in 2023. Basics about the transition are given by Elena Simperl, president of SWSA.
https://swsa.semanticweb.org/

New universality classes and BKT transition in the vortex lattice phases of Kagome Ice
Wei Zhang, Wanzhou Zhang, Jie Zhang, Chengxiang Ding, Youjin Deng
https://arxiv.org/abs/2506.00804

New universality classes and BKT transition in the vortex lattice phases of Kagome Ice
Inspired by the experimental realization of direct Kagome spin ice [arXiv:2404.19377], the theoretical six-vertex model on the Kagome lattice is systematically simulated using the directed loop Monte Carlo method. Four distinct vortex lattice phases are identified: (i) Ferromagnetic leg states and vortex lattice order on both triangular and honeycomb faces, with a winding number $ k = 1 $. (ii) Antiferromagnetic leg states and vortex lattice order on both types of faces, with $ k = -2 $ on the …

Conclusions from the excellent #AlternativeDefenceReview
https://cnduk.org/wp-content/uploads/2025/05/ADR-digital.pdf

Convex Approximations of Random Constrained Markov Decision Processes
V Varagapriya, Vikas Vikram Singh, Abdel Lisser
https://arxiv.org/abs/2505.24815 http…

Convex Approximations of Random Constrained Markov Decision Processes
Constrained Markov decision processes (CMDPs) are used as a decision-making framework to study the long-run performance of a stochastic system. It is well-known that a stationary optimal policy of a CMDP problem under discounted cost criterion can be obtained by solving a linear programming problem when running costs and transition probabilities are exactly known. In this paper, we consider a discounted cost CMDP problem where the running costs and transition probabilities are defined using ran…

Learning collective variables that preserve transition rates
Shashank Sule, Arnav Mehta, Maria K. Cameron
https://arxiv.org/abs/2506.01222 https://

Learning collective variables that preserve transition rates
Collective variables (CVs) play a crucial role in capturing rare events in high-dimensional systems, motivating the continual search for principled approaches to their design. In this work, we revisit the framework of quantitative coarse graining and identify the orthogonality condition from Legoll and Lelievre (2010) as a key criterion for constructing CVs that accurately preserve the statistical properties of the original process. We establish that satisfaction of the orthogonality condition …

This https://arxiv.org/abs/2505.20002 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Efficient Gaussian Mixture Filters based on Transition Density Approximation
Gaussian mixture filters for nonlinear systems usually rely on severe approximations when calculating mixtures in the prediction and filtering step. Thus, offline approximations of noise densities by Gaussian mixture densities to reduce the approximation error have been proposed. This results in exponential growth in the number of components, requiring ongoing component reduction, which is computationally complex. In this paper, the key idea is to approximate the true transition density by an a…

Alignment Phase Transition in Socially Driven Motion
Debasish Sarker, Yi Zhang, Lynn K. Perry, Daniel S. Messinger, Chaoming Song
https://arxiv.org/abs/2506.01550

Alignment Phase Transition in Socially Driven Motion
Collective human movement is a hallmark of complex systems, exhibiting emergent order across diverse settings, from pedestrian flows to biological collectives. In high-speed scenarios, alignment interactions ensure efficient flow and navigation. In contrast, alignment in low-speed, socially engaged contexts emerges not from locomotion goals but from interpersonal interaction. Using high-resolution spatial and orientation data from preschool classrooms, we uncover a sharp, distance-dependent tra…

Topological phase transition induced by twisting unit cells in photonic Lieb lattice
Zhi-Kang Xiong, Y. Liu, Xiying Fan, Bin Zhou
https://arxiv.org/abs/2506.22878

Topological phase transition induced by twisting unit cells in photonic Lieb lattice
Topological photonics was embarked from realizing the first-order chiral edge state in gyromagnetic media, but its higher-order states were mostly studied in dielectric lattice instead. In this paper in a series of gyromagnetic Lieb photonic crystals, we theoretically unveil topological phases which include the first-order Chern, and the second-order dipole, quadrupole phases. Concretely, for the primitive Lieb lattice, and for its deformation by breaking spatial symmetry through unit-cell twis…

Temperature chaos as a logical consequence of reentrant transition in spin glasses
Hidetoshi Nishimori, Masayuki Ohzeki, Manaka Okuyama
https://arxiv.org/abs/2507.00276

Temperature chaos as a logical consequence of reentrant transition in spin glasses
Temperature chaos is a striking phenomenon in spin glasses, where even slight changes in temperature lead to a complete reconfiguration of the spin state. Another intriguing effect is the reentrant transition, in which lowering the temperature drives the system from a ferromagnetic phase into a less ordered spin-glass or paramagnetic phase. In the present paper, we reveal an unexpected connection between these seemingly unrelated phenomena in the finite-dimensional Edwards-Anderson model of spi…

Phase Transition in Nonparametric Minimax Rates for Covariate Shifts on Approximate Manifolds
Yuyao Wang, Nabarun Deb, Debarghya Mukherjee
https://arxiv.org/abs/2507.00889

Phase Transition in Nonparametric Minimax Rates for Covariate Shifts on Approximate Manifolds
We study nonparametric regression under covariate shift with structured data, where a small amount of labeled target data is supplemented by a large labeled source dataset. In many real-world settings, the covariates in the target domain lie near a low-dimensional manifold within the support of the source, e.g., personalized handwritten digits (target) within a large, high-dimensional image repository (source). Since density ratios may not exist in these settings, standard transfer learning tec…

THIS👇👇👇👇👇
https://zirk.us/@ChrisMayLA6/114949958179517536
( And it highlights the fact that we need to rethink utilities, recognizing them as services necessary for a modern equitable society to function)

THIS👇👇👇👇👇
https://zirk.us/@ChrisMayLA6/114949958179517536
( And it highlights the fact that we need to rethink utilities, recognizing them as services necessary for a modern equitable society to function)

Continuous transition from Fermi liquid to A fractional Chern insulator
Ya-Hui Zhang
https://arxiv.org/abs/2507.22130 https://arxiv.org/pdf/2507.22130

Continuous transition from Fermi liquid to A fractional Chern insulator
Recent experiments in moiré materials have observed fractional Chern insulators (FCI) at zero magnetic field, providing an opportunity to study the transition from FCI to the more conventional phases such as Fermi liquid (FL) and superconductor (SC) by tuning the interaction strength or bandwidth. In this work, we formulate a critical theory for a continuous transition at the filling $ν=\frac{2}{3}$ between the FL and a FCI* phase that hosts an additional neutral sector, but has the same tran…

Testing parametric additive time-varying GARCH models
Niklas Ahlgren, Alexander Back, Timo Ter\"asvirta
https://arxiv.org/abs/2506.23821 https://

Testing parametric additive time-varying GARCH models
We develop misspecification tests for building additive time-varying (ATV-)GARCH models. In the model, the volatility equation of the GARCH model is augmented by a deterministic time-varying intercept modeled as a linear combination of logistic transition functions. The intercept is specified by a sequence of tests, moving from specific to general. The first test is the test of the standard stationary GARCH model against an ATV-GARCH model with one transition. The alternative model is unidentif…

This https://arxiv.org/abs/2502.14447 has been replaced.
initial toot: https://mastoxiv.page/@a…

Thermal conductance at the superradiant phase transition in the quantum Rabi model
The quantum Rabi model exhibits a superradiant phase transition when the coupling becomes strong, even though it involves only two components: a two-level atom and a single bosonic mode. This phase transition is referred to as a finite-component quantum phase transition, in contrast to conventional phase transitions in many-body systems. In this Letter, we investigate heat transport across an atom embedded in bosonic modes, modeled by the quantum Rabi model, between two thermal baths. We found …

Quantifying the impact of the Tamm-Dancoff approximation on the computed spectra of transition-metal systems
Muhammed A. Dada, Sarah Pak, Matthew N. Ward, Megan Simons, Daniel R. Nascimento
https://arxiv.org/abs/2507.00314

Quantifying the impact of the Tamm-Dancoff approximation on the computed spectra of transition-metal systems
The Tamm-Dancoff Approximation (TDA) offers a computationally efficient alternative to full linear-response Time-Dependent Density Functional Theory (TDDFT) for calculating electronic excited states, particularly in large molecular systems. By neglecting the coupling between excitation and de-excitation channels, TDA simplifies the TDDFT response equations into a Hermitian form. This not only reduces computational cost but also eliminates numerical instabilities that can arise in the full non-H…

Significance of soft-scale breaking on primordial black hole production in Coleman-Weinberg type supercooling-phase transition
He-Xu Zhang, Katsuya Hashino, Hiroyuki Ishida, Shinya Matsuzaki
https://arxiv.org/abs/2506.23752

Significance of soft-scale breaking on primordial black hole production in Coleman-Weinberg type supercooling-phase transition
Ultra-supercooling phase transitions can generate large overdensities in the Universe, potentially leading to the formation of primordial black holes (PBHs), which can also be a dark matter candidate. In this work, we focus on the supercooling phase transition for the scale symmetry breaking based on the effective potential of the Coleman-Weinberg (CW) type. We investigate the effect on the PBH production in the presence of an additional mass term for the CW scalar field, what we call a soft-sc…

Heavy Ion Double Charge Exchange Reactions as Probes for Two-Body Transition Densities
Jessica I. Bellone, Maria Colonna, Danilo Gambacurta, Horst Lenske
https://arxiv.org/abs/2505.24753

Heavy Ion Double Charge Exchange Reactions as Probes for Two-Body Transition Densities
Collisional heavy ion double charge exchange (DCE) reactions, induced by second order nucleon-nucleon interactions, are shown to provide access to the two-body transition densities of the complementary DCE transitions in the interacting nuclei. Corresponding two-body operators are introduced, treating the second order distorted wave reaction amplitude in the s-channel interaction form. The theoretical results are applied to the reaction $^{18}O+{}^{76}Se\to {} ^{18}Ne+{}^{76}Ge$ at $T_{lab}=270…

This https://arxiv.org/abs/2312.17213 has been replaced.
initial toot: https://mastoxiv.page/@a…

Possible Unconventional Surface Superconductivity in the Half-Heusler YPtBi
We report an extensive study of the noncentrosymmetric half-Heusler superconductor YPtBi, revealing an unusual relation between bulk superconductivity and the possible appearance of surface superconductivity on the (111) oriented surface, at temperatures up to 3 times the bulk transition temperature. Transport measurements confirmed the low carrier density of the material and its bulk superconducting transition, which was also observed in ac susceptibility through mutual inductance (MI) measure…

Following the Committor Flow: A Data-Driven Discovery of Transition Pathways
Cheng Giuseppe Chen, Chenyu Tang, Alberto Meg\'ias, Radu A. Talmazan, Sergio Contreras Arredondo, Beno\^it Roux, Christophe Chipot
https://arxiv.org/abs/2507.21961

Following the Committor Flow: A Data-Driven Discovery of Transition Pathways
The discovery of transition pathways to unravel distinct reaction mechanisms and, in general, rare events that occur in molecular systems is still a challenge. Recent advances have focused on analyzing the transition path ensemble using the committor probability, widely regarded as the most informative one-dimensional reaction coordinate. Consistency between transition pathways and the committor function is essential for accurate mechanistic insight. In this work, we propose an iterative framew…

Sim2Real Diffusion: Learning Cross-Domain Adaptive Representations for Transferable Autonomous Driving
Chinmay Vilas Samak, Tanmay Vilas Samak, Bing Li, Venkat Krovi
https://arxiv.org/abs/2507.00236

Sim2Real Diffusion: Learning Cross-Domain Adaptive Representations for Transferable Autonomous Driving
Simulation-based design, optimization, and validation of autonomous driving algorithms have proven to be crucial for their iterative improvement over the years. Nevertheless, the ultimate measure of effectiveness is their successful transition from simulation to reality (sim2real). However, existing sim2real transfer methods struggle to comprehensively address the autonomy-oriented requirements of balancing: (i) conditioned domain adaptation, (ii) robust performance with limited examples, (iii)…

Electromagnetically Reconfigurable Antennas for 6G: Enabling Technologies, Prototype Studies, and Research Outlook
Pinjun Zheng, Ruiqi Wang, Yuchen Zhang, Md. Jahangir Hossain, Anas Chaaban, Atif Shamim, Tareq Y. Al-Naffouri
https://arxiv.org/abs/2506.00657

Electromagnetically Reconfigurable Antennas for 6G: Enabling Technologies, Prototype Studies, and Research Outlook
The transition to the sixth-generation (6G) network is anticipated to redefine wireless transceiver architectures, demanding higher adaptability and efficiency at the antenna layer. Electromagnetically reconfigurable antennas (ERAs) have emerged as a promising solution capable of dynamically reconfiguring wireless channels to meet these requirements. This article presents an overview of recent advancements in ERA technology, underscoring its transformative potential for 6G applications. Drawing…

Markov Chains of Evolutionary Games with a Small Number of Players
Athanasios Kehagias
https://arxiv.org/abs/2506.23134 https://arxiv…

Markov Chains of Evolutionary Games with a Small Number of Players
We construct and study the transition probability matrix of evolutionary games in which the number of players is finite (and relatively small) of such games. We use a simplified version of the population games studied by Sandholm. After laying out a general framework we concentrate on specific examples, involving the Iterated Prisoner's Dilemma, the Iterated Stag Hunt, and the Rock-Paper-Scissors game. Also we consider several revision protocols: Best Response, Pairwise Comparison, Pairwise Pro…

Unconventional superlattice ordering in intercalated transition metal dichalcogenide V$_{1/3}$NbS$_2$
Shannon S. Fender, Noah Schnitzer, Wuzhang Fang, Lopa Bhatt, Dingbin Huang, Amani Malik, Oscar Gonzalez, Veronika Sunko, Lilia S. Xie, David A. Muller, Joseph Orenstein, Yuan Ping, Berit H. Goodge, D. Kwabena Bediako
https://arx…

Unconventional superlattice ordering in intercalated transition metal dichalcogenide V$_{1/3}$NbS$_2$
The interplay between symmetry and topology in magnetic materials makes it possible to engineer exotic phases and technologically useful properties. A key requirement for these pursuits is achieving control over local crystallographic and magnetic structure, usually through sample morphology (such as synthesis of bulk crystals versus thin-films) and application of magnetic or electric fields. Here we show that V$_{1/3}$NbS$_2$ can be crystallized in two ordered superlattices, distinguished by t…

Random walks in a field of soft traps and criticality for the dissipative Abelian Sandpile Model
Frank Redig, Berend van Tol, Ellen Saada
https://arxiv.org/abs/2507.00562

Random walks in a field of soft traps and criticality for the dissipative Abelian Sandpile Model
Motivated by the dissipative abelian sandpile model, we analyze the trajectories of a one-dimensional random walk in a landscape of soft traps. These traps, placed at increasing distances from each other, correspond to dissipative sites in the associated dissipative abelian sandpile model. We identify a critical growth rate of the sizes of intervals between successive traps where there is a transition between finiteness and non-finiteness of the expected survival time of the random walk. This c…

Stochastic forest transition model dynamics and parameter estimation via deep learning
Satoshi Kumabe, Tianyu Song, Ton Viet Ta
https://arxiv.org/abs/2507.21486 https://

Stochastic forest transition model dynamics and parameter estimation via deep learning
Forest transitions, characterized by dynamic shifts between forest, agricultural, and abandoned lands, are complex phenomena. This study developed a stochastic differential equation model to capture the intricate dynamics of these transitions. We established the existence of global positive solutions for the model and conducted numerical analyses to assess the impact of model parameters on deforestation incentives. To address the challenge of parameter estimation, we proposed a novel deep learn…

Algorithm for computing canonical bases and foldings of quantum groups
Toshiaki Shoji, Zhiping Zhou
https://arxiv.org/abs/2506.00793 https://

Algorithm for computing canonical bases and foldings of quantum groups
Let ${\mathbf U}_q^-$ be the negative half of a quantum group of finite type. Let $P$ be the transition matrix between the canonical basis and a PBW basis of ${\mathbf U}_q^-$. In the case ${\mathbf U}_q^-$ is symmetric, Antor gave a simple algorithm of computing $P$ by making use of monomial bases. By the folding theory, ${\mathbf U}_q^-$ (symmetric, with a certain automorphism) is related to a quantum group $\underline{\mathbf U}_q^-$ of non-symmetric type. In this paper, we extend the result…

On cluster structures of bosonic extensions
Yingjin Bi
https://arxiv.org/abs/2506.00882 https://arxiv.org/pdf/2506.00882

On cluster structures of bosonic extensions
In this paper, we analyze the transition maps for Lusztig's parameterization of the global basis for the bosonic extension $\widehat{\mathcal{A}}(b)$ of the quantum coordinate ring of a unipotent group, where $b$ belongs to the positive braid group $\operatorname{Br}^+$. By examining different reduced expressions of $b$, we establish that the cluster structure on $\widehat{\mathcal{A}}(b)$ remains invariant regardless of the chosen reduced expression. For the simply-laced case, we construct a c…

Goff: Lions having easy time adjusting to new OC https://www.espn.com/nfl/story/_/id/45814509/jared-goff-says-lions-having-great-transition-new-oc-john-morton

Wow, #pythonPoetry v2 sure introduced many breaking changes. They outsourced `poetry shell` (a very important and IMHO core command for entering a shell with the virtual environment activated) into a plugin (wtf 🤨) that you need to provide separately.
That poetry can't pin itself bit me quite a couple of times with the v2 transition. They also changed the behaviour of the -C flag (r…

Why Academics Are Leaving Twitter for Bluesky
Dorian Quelle, Frederic Denker, Prashant Garg, Alexandre Bovet
https://arxiv.org/abs/2505.24801 https://

Why Academics Are Leaving Twitter for Bluesky
We analyse the migration of 300,000 academic users from Twitter/X to Bluesky between 2023 and early 2025, combining rich bibliometric data, longitudinal social-media activity, and a novel cross-platform identity-matching pipeline. We show that 18% of scholars in our sample transitioned, with transition rates varying sharply by discipline, political expression, and Twitter engagement but not by traditional academic metrics. Using time-varying Cox models and a matched-pairs design, we isolate gen…

Trump-linked firms
cash in on mineral lobbying deals
as US cuts aid
https://globalwitness.org/en/campaigns/transition-minerals/revealed-trump-linked-firms-cash-in-on-mineral-lobbying-deals-as-…

Trump-linked firms make millions from aid-deprived nations
Pakistan, Somalia and Haiti among 11 nations to sign deals with Trump-linked figures, many trading resources like minerals for aid or military support

"L'UE et la Chine sont plus proches l'une de l'autre qu'on ne le pense. Toutes deux sont des importateurs nets de combustibles fossiles. Elles sont toutes deux de grands producteurs de technologies sans carbone et ont donc intérêt Š soutenir la demande mondiale de produits verts. Enfin, dans un contexte d'incertitude croissante, elles ont toutes deux parié sur la transition énergétique comme étant la voie la plus viable vers la compétitivité et l'innovation.&quot…

Roughening and dynamics of an electric flux string in a (2 1)D lattice gauge theory
Francesco Di Marcantonio, Sunny Pradhan, Sofia Vallecorsa, Mari Carmen Ba\~nuls, Enrique Rico Ortega
https://arxiv.org/abs/2505.23853

Roughening and dynamics of an electric flux string in a (2+1)D lattice gauge theory
We investigate the roughening transition in the pure $\mathbb{Z}_2$ lattice gauge theory in (2+1) dimensions. Using numerical simulations with matrix product states, we explore the static and dynamical properties of an electric flux string between two static charges as the coupling is varied and approaches the deconfinement phase transition from the confined phase. Within the roughening region, we obtain the universal Lüscher correction to the confining potential and observe the expected resto…

Defense Forces disband two Tactical Groups: https://benborges.xyz/2025/07/30/defense-forces-disband-two-tactical.html

Plasmonic detection of Rashba spin-orbit coupling in monolayer transition-metal dichalcogenides
Y. Li, Z. H. Tao, Y. M. Xiao, W. Xu, Q. N. Li, F. M. Peeters, D. Neilson, M. V. Milosevic
https://arxiv.org/abs/2507.00567

Plasmonic detection of Rashba spin-orbit coupling in monolayer transition-metal dichalcogenides
Rashba spin-orbit coupling (RSOC) induces strong momentum-dependent spin splitting and plays a crucial role in fields like spintronics and topological photonics. We here theoretically investigate the collective excitations in monolayer transition metal dichalcogenides (ML-TMDs) hosting RSOC, and conceive an approach to precisely quantify the strength of RSOC using plasmons. We determine the electron energy loss function (EELF) and plasmon dispersions for n-type ML-TMD from the dynamic dielectri…

Probing transition rates, nuclear moments and electric dipole polarizability in nobelium using multireference FSRCC and PRCC theories
Ravi Kumar, Palki Gakkhar, D. Angom, B. K. Mani
https://arxiv.org/abs/2507.20875 https://arxiv.org/pdf/2507.20875 https://arxiv.org/html/2507.20875
arXiv:2507.20875v1 Announce Type: new
Abstract: We employ an all-particle multireference Fock-space relativistic coupled-cluster (FSRCC) theory to compute the ionization potential, excitation energy, transition rate and hyperfine structure constants associated with $7s^2\;^{1}S_{0}\rightarrow 7s7p\;^{3}P_{1}$ and $7s^2\;^{1}S_{0}\rightarrow 7s7p\;^1P_{1}$ transitions in nobelium (No). Using our state-of-the-art calculations in conjunction with available experimental data \cite{raeder-18}, we extract the values of nuclear magnetic dipole ($\mu$) and electric quadrupole ($Q$) moments for $^{253}$No. Further, information on nuclear deformation in even-mass isotopes is extracted from the isotope shift calculations. Moreover, we employ a perturbed relativistic coupled-cluster (PRCC) theory to compute the ground state electric dipole polarizability of No. In addition, to assess the accuracy of our calculations, we compute the ionization potential and dipole polarizability of lighter homolog ytterbium (Yb). To account for strong relativistic and quantum electrodynamical (QED) effects in No, we incorporate the corrections from Breit interaction, vacuum polarization and self-energy in our calculations. The contributions from triple excitations in coupled-cluster is accounted perturbatively. Our calculations reveal a significant contribution of $\approx$10\% from the perturbative triples to the transition rate of $7s^2\;^1S_{0}\rightarrow 7s7p\;^3P_{1}$ transition. The largest cumulative contribution from Breit QED is observed to be $\approx$4\%, to the magnetic dipole hyperfine structure constant of $7s7p\;^1P_{1}$ state. Our study provides a comprehensive understanding of atomic and nuclear properties of nobelium with valuable insights into the electron correlation and relativistic effects in superheavy elements.
toXiv_bot_toot

Beyond Static Responses: Multi-Agent LLM Systems as a New Paradigm for Social Science Research
Jennifer Haase, Sebastian Pokutta
https://arxiv.org/abs/2506.01839

Beyond Static Responses: Multi-Agent LLM Systems as a New Paradigm for Social Science Research
As large language models (LLMs) transition from static tools to fully agentic systems, their potential for transforming social science research has become increasingly evident. This paper introduces a structured framework for understanding the diverse applications of LLM-based agents, ranging from simple data processors to complex, multi-agent systems capable of simulating emergent social dynamics. By mapping this developmental continuum across six levels, the paper clarifies the technical and …

Warner Bros. Motion Picture Group is undergoing 10% cuts across multiple divisions to transition "toward a fully global structure" (Pamela McClintock/The Hollywood Reporter)
https://www.hollywoodreporter.com/movies/movie-new…

Layoffs Strike Warner Bros. Motion Picture Group
Studio heads Michael De Luca and Pamela Abdy announced the shift in direction in a memo to staff.

Boundary-layer transition in the age of data: from a comprehensive dataset to fine-grained prediction
Wenhui Chang, Hongyuan Hu, Youcheng Xi, Markus Kloker, Honghui Teng, Jie Ren
https://arxiv.org/abs/2507.19120

Boundary-layer transition in the age of data: from a comprehensive dataset to fine-grained prediction
The laminar-to-turbulent transition remains a fundamental and enduring challenge in fluid mechanics. Its complexity arises from the intrinsic nonlinearity and extreme sensitivity to external disturbances. This transition is critical in a wide range of applications, including aerospace, marine engineering, geophysical flows, and energy systems. While the governing physics can be well described by the Navier-Stokes equations, practical prediction efforts often fall short due to the lack of compre…

General diffusions on metric graphs as limits of time-space Markov Chains
Alexis Anagnostakis
https://arxiv.org/abs/2507.23724 https://arxiv.org/pdf/2507.2…

General diffusions on metric graphs as limits of time-space Markov Chains
We introduce the Space-Time Markov Chain Approximation (STMCA) for a general diffusion process on a finite metric graph $Γ$. The STMCA is a doubly asymmetric (in both time and space) random walk defined on a subdivisions of $Γ$, with transition probabilities and conditional transition times that match, in expectation, those of the target diffusion. We derive bounds on the $p$-Wasserstein distances between the diffusion and its STMCA in terms of a thinness quantifier of the subdivision. This b…

Could Living Cells Use Phase Transitions to Process Information?
Arvind Murugan, David Zwicker, Charlotta Lorenz, Eric R. Dufresne
https://arxiv.org/abs/2507.23384 https://

Could Living Cells Use Phase Transitions to Process Information?
To maintain homeostasis, living cells process information with networks of interacting molecules. Traditional models for cellular information processing have focused on networks of chemical reactions between molecules. Here, we describe how networks of physical interactions could contribute to the processing of information inside cells. In particular, we focus on the impact of biomolecular condensation, a structural phase transition found in cells. Biomolecular condensation has recently been im…

🇺🇦 #NowPlaying on #BBC6Music's #NickGrimshaw
Eve:
🎵 Who's That Girl?
#Eve
https://djnikosd.bandcamp.com/track/eve-whos-that-girl-nikos-d-transition-128-108-128
https://open.spotify.com/track/3uVE5vLKkigiWBOQEgmdDk

Semiclassical Spin Exchange via Temperature-Dependent Transition States
Debaarjun Mukherjee, Jeremy O. Richardson
https://arxiv.org/abs/2507.22700 https://…

Semiclassical Spin Exchange via Temperature-Dependent Transition States
Spin-exchange collisions have been widely studied in recent years, and various quantum-mechanical scattering approaches have been developed to calculate the rates. However, these methods based on global knowledge of wavefunctions can be computationally demanding and do not offer a simple mechanistic interpretation. Here, we present a new semiclassical transition-state theory (SCTST) derived from first principles to describe the nonadiabatic transition between two states which differ only in the…

Cusp-to-Core Transition of Dark Matter Halos across Galaxy Mass Scales
Kohei Hayashi, Yuka Kaneda, Masao Mori, Michi Shinozaki
https://arxiv.org/abs/2507.22155 https://

Cusp-to-Core Transition of Dark Matter Halos across Galaxy Mass Scales
We investigate the diversity of dark matter (DM) density profiles in a large sample of late-type galaxies from the SPARC database, with the goal of testing whether a cusp-to-core transition occurs across galaxy mass scales. We perform Bayesian fits to high-quality rotation curves using flexible halo models that allow for variations in the inner slopes of DM density profiles. We quantify the central dark matter structure using the surface density within the inner region of the halo, defined as $…

This https://arxiv.org/abs/2411.06332 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Quantum feedback induced entanglement relaxation and dynamical phase transition in monitored free fermion chains with Wannier-Stark ladder
In recent years, measurement induced entanglement transitions (MIETs) have attracted significant attention. However, the dynamical transition associated with the feedback induced skin effect, which exhibits a wealth of intriguing phenomena, has not been fully understood. In this work, we investigate a dynamical phase transition in a tilted free-fermion chain under measurement-feedback protocols, emphasizing the particle density and entanglement entropy dynamics. We reveal a feedback induced ski…

Heavy mesons in an effective quark model with a nonlocal interaction
A. Friesen, Yu. Kalinovsky, A. Khmelev
https://arxiv.org/abs/2505.24542 https://

Heavy mesons in an effective quark model with a nonlocal interaction
We discuss the properties of light and heavy mesons in the framework of a model with nonlocal interaction. We start from the Bethe-Salpeter equation, choosing the interaction kernel in a nonlocal form with the Gaussian meson vertex function. We fix the model parameters using electromagnetic and leptonic decay constants. Within this model, we consider the neutral pion transition form factor ${F}_{πγ}$and apply the model to the transition form factors of heavy pseudoscalar mesons $η_c$ and $η…

Current-induced spin-orbit torque on the surface of a transition metal dichalcogenide connected to a two-dimensional ferromagnet CrI$_3$: Effects of twisting and gating
Leyla Majidi, Azadeh Faridi, Reza Asgari
https://arxiv.org/abs/2507.23655

Current-induced spin-orbit torque on the surface of a transition metal dichalcogenide connected to a two-dimensional ferromagnet CrI$_3$: Effects of twisting and gating
Motivated by recent progress in employing two key classes of two-dimensional materials-topological insulators and transition-metal dichalcogenides (TMDCs)-as spin sources for generating spin-orbit torque (SOT), we investigate current-induced spin polarization and the resulting SOT in bilayers composed of a TMDC (WSe$_2$ or MoSe$_2$) and ferromagnetic chromium iodide (CrI$_3$), beyond the linear response regime. Using the steady-state Boltzmann equation, we find that intra-band transitions yield…

On the reggeon model with the pomeron and odderon: singularities with non-zero masses
M. A. Braun (Saint-Petersburg State University, Russia), E. M. Kuzminskii (Petersburg Nuclear Physics Institute, Russia), M. I. Vyazovsky (Saint-Petersburg State University, Russia)
https://arxiv.org/abs/2507.23086

On the reggeon model with the pomeron and odderon: singularities with non-zero masses
The Regge-Gribov model of the pomeron and odderon in the non-trivial transverse space is studied by the renormalization group technique in the single loop approximation. The pomeron and odderon are taken to have different bare intercepts and slopes. The behaviour when the intercepts move from below to their critical values compatible with the Froissart limitation is studied. The singuarities in the form of non-trivial branch points indicating a phase transition are found in the vicinity of five…

This https://arxiv.org/abs/2505.20159 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Many-body localization in a quantum Ising model with the long-range interaction: Accurate determination of the transition point
Many-body localization (MBL) transition emerges at strong disorder in interacting systems, separating chaotic and reversible dynamics. Although the existence of MBL transition within the macroscopic limit in spin chains with a short-range interaction was proved rigorously, the transition point is not found yet because of the dramatic sensitivity of the transition point to the chain length at computationally accessible lengths, possible due to local fluctuations destroying localization. Here we …

Hybrid Quark Stars with Quark-Quark Phase Transitions
Zongcan Yang, Tianxiong Zeng, Yan Yan, Wen-Li Yuan, Chen Zhang, Enping Zhou
https://arxiv.org/abs/2507.00776

Hybrid Quark Stars with Quark-Quark Phase Transitions
We explore the possibility of phase transitions between different quark matter phases occurring within quark stars, giving rise to the hybrid quark stars (HybQSs). Utilizing a well-established general parameterization of interacting quark matter, we construct quark star models featuring sharp first-order quark-quark phase transitions of various types, in contrast to the hadron-quark transition in conventional hybrid stars. We systematically investigate how recent observations, such as the pulsa…

Learning collective variables that respect permutational symmetry
Jiaxin Yuan, Shashank Sule, Yeuk Yin Lam, Maria Cameron
https://arxiv.org/abs/2507.00408 …

Learning collective variables that respect permutational symmetry
In addition to translational and rotational symmetries, clusters of identical interacting particles possess permutational symmetry. Coarse-grained models for such systems are instrumental in identifying metastable states, providing an effective description of their dynamics, and estimating transition rates. We propose a numerical framework for learning collective variables that respect translational, rotational, and permutational symmetries, and for estimating transition rates and residence tim…

This terrible, terrible bill is going to do direct, material harm to the country
- our health care system is going to be weakened,
- close to 100m people will be paying more for health care or lose their insurance,
- tens of millions will struggle to eat,
- our existential transition to a clean energy future undermined,
- an unprecedented domestic political police force will be established,
- the fiscal integrity of the United States will be in jeopardy t…

Signing This Terrible Bill Will Be A Loss For Trump - And America - Not A Win
Our leaders need to hear our roar of disapproval today, tomorrow, all week. Those of you with Republican Senators or House Members need to be particularly loud now

Colloidal nanoparticles in cholesteric liquid crystals: Bulk properties, biaxiality and untwisting
Prabakaran Rajamanickam, Fatimah Almutari, Apala Majumdar
https://arxiv.org/abs/2506.01417

Colloidal nanoparticles in cholesteric liquid crystals: Bulk properties, biaxiality and untwisting
We study the effects of colloidal nanoparticles (NPs) in cholesteric liquid crystal samples in the dilute limit, in a Landau-de Gennes theoretical framework. The effects of the suspended NPs are captured by a homogenized energy, as outlined in [7]. For spatially homogeneous samples, we explicitly compute the critical points and minimizers of the modified Landau-de Gennes energy and show that the presence of NP eliminates the first-order isotropic-nematic phase transition, stabilises elusive bia…

Anytime-Valid Tests for Sparse Anomalies
Muriel F. P\'erez-Ortiz, Rui M. Castro
https://arxiv.org/abs/2506.22588 https://arxiv.or…

Anytime-Valid Tests for Sparse Anomalies
We consider the problem of detection of sparse anomalies when monitoring a large number of data streams continuously in time. This problem is addressed using anytime-valid tests. In the context of a normal-means model and for a fixed sample, this problem is known to exhibit a nontrivial phase transition that characterizes when anomalies can and cannot be detected. We show, for the anytime-valid version of the problem, testing procedures that can detect the presence of anomalies quickly. Given t…

Prediction of Ambient-Pressure High-Temperature Superconductivity in Doped Transition-Metal Hydrides
Haowei Xu, Olivia Schneble, Rafael Jaramillo, Marek Pola\'nski, Ju Li
https://arxiv.org/abs/2507.19768

Prediction of Ambient-Pressure High-Temperature Superconductivity in Doped Transition-Metal Hydrides
The search for conventional superconductors with high transition temperatures ($T_c$) has largely focused on intrinsically metallic compounds. In this work, we explore the potential of intrinsically non-metallic compounds to exhibit high-$T_c$ superconductivity under ambient pressure through carrier doping. We identify $\rm MgAlFeH_6$, a representative of carrier-doped transition-metal hydrides like $\rm Mg_2FeH_6$, as a promising example with a predicted $T_c \approx 130~\rm K$. We propose tha…

Waves in a shear flow: transition between the KH, Holmboe and Miles instability
Anil Kumar, S. Ravichandran, Ratul Dasgupta
https://arxiv.org/abs/2507.20166 https://

Waves in a shear flow: transition between the KH, Holmboe and Miles instability
We investigate shear driven wave generation at the interface between two immiscible fluids, using an exponential velocity profile with a sharp density interface representing stable stratification. At low Froude and high Bond numbers, conditions relevant to geophysical and astrophysical flows, we identify a novel transition in the fastest growing mode: from Kelvin Helmholtz (KH) instability at high density ratio (delta = 0.9), to Holmboe (H) instability as delta approaches 0.5, and ultimately to…

Discovery of spontaneous mesoscopic strain waves in nematic domains using dark-field X-ray microscopy
Kaan Alp Yay, W. Joe Meese, Elliot Kisiel, Matthew J. Krogstad, Anisha G. Singh, Rafael M. Fernandes, Zahir Islam, Ian R. Fisher
https://arxiv.org/abs/2507.23752

Discovery of spontaneous mesoscopic strain waves in nematic domains using dark-field X-ray microscopy
Electronic nematic order is a correlated phase of matter in which low-energy electronic states spontaneously break a discrete rotational symmetry of a crystal lattice. Bilinear coupling between the electronic nematic and strains of the same symmetry yields a single pseudoproper ferroelastic phase transition at which both the nematic and lattice strain onset concurrently. To minimize elastic energy, the crystal forms structural twin domains, each with a distinct orientation of the nematic direct…

Dynamics of chiral phase transition in a $N_f=2 1$ soft-wall AdS/QCD model
Han Tang, Bin Dong, Nanxiang Wen, Yidian Chen, Danning Li
https://arxiv.org/abs/2507.21735 https://

Dynamics of chiral phase transition in a $N_f=2+1$ soft-wall AdS/QCD model
We investigate the real-time dynamics of the chiral phase transition in a soft-wall AdS/QCD model, of which the mass plane phase diagram from equilibrium calculation is qualitatively consistent with the so-called Columbia plot. By directly solving the non-equilibrium evolution of the order parameter of the chiral phase transition, i.e. the chiral condensate, we study the thermalization of the QCD matter in different regions of the quark mass plane. It is shown that, when the system is close to …

Structural Stability of Sulfur Depleted MoS2
Ygor M. Jaques, Cristiano F. Woellner, Lucas M. Sassi, Marcelo L. Pereira Jr, Luiz A. Ribeiro Jr, Pulickel M. Ajayan, Douglas S. Galv\~ao
https://arxiv.org/abs/2505.24644

Structural Stability of Sulfur Depleted MoS2
Transition metal dichalcogenides (TMDs), particularly monolayer MoS2, have received increased attention in materials science and have been exploited in diverse applications from photonics to catalysis. Defects in TMDs play a crucial role in modulating their properties, and understanding defect-induced dynamics is of great importance. This study investigates the dynamics of sulfur depletion in defective monolayer MoS2, which yields stable MoS monolayers. Various defect sizes, temperature regimes…

Controlling the quantum phase transition in a double quantum dot Josephson junction via interactions
Cong Li, Yiyan Wang, Bing Dong
https://arxiv.org/abs/2506.23636

Controlling the quantum phase transition in a double quantum dot Josephson junction via interactions
In this work, we employ a surrogate BCS model with discrete energy levels to investigate a hybrid system comprising two quantum dots (QD1 and QD2), where QD1 is tunnel-coupled to two superconducting leads. Through exact diagonalization of this system, we obtain numerically exact solutions that enable rigorous computation of key physical quantities. Our analysis reveals a rich phase diagram featuring multiple controllable phase transitions mediated by quantum dot interactions. Specifically, the …

A White Paper on The Multi-Messenger Science Landscape in India
Samsuzzaman Afroz, Sanjib Kumar Agarwalla, Dipankar Bhattacharya, Soumya Bhattacharya, Subir Bhattacharyya, Varun Bhalerao, Debanjan Bose, Chinmay Borwanker, Ishwara Chandra C. H., Aniruddha Chakraborty, Indranil Chakraborty, Sovan Chakraborty, Debarati Chatterjee, Varsha Chitnis, Moon Moon Devi, Sanjeev Dhurandhar, Amol Dighe, Bitan Ghosal, Sourendu Gupta, Arpan Hait, Md Emanuel Hoque, Pratik Majumdar, Nilmani Mathur, Har…

A White Paper on The Multi-Messenger Science Landscape in India
The multi-messenger science using different observational windows to the Universe such as Gravitational Waves (GWs), Electromagnetic Waves (EMs), Cosmic Rays (CRs), and Neutrinos offer an opportunity to study from the scale of a neutron star to cosmological scales over a large cosmic time. At the smallest scales, we can explore the structure of the neutron star and the different energetics involved in the transition of a pre-merger neutron star to a post-merger neutron star. This will open up a…

Submillimeter Class II methanol masers near the massive protostar S255IR NIRS3: evolution and excitation of the $J_1 -J_0$ A$^{- }$ series and a new maser line at 345.919 GHz
I. I. Zinchenko (Institute of Applied Physics of the Russian Academy of Sciences), S. V. Salii (Astronomical Observatory, Ural Federal University), A. M. Sobolev (Astronomical Observatory, Ural Federal University), I. A. Zaichikova (Institute of Applied Physics of the Russian Academy of Sciences), S. -Y. Liu (Inst…

Submillimeter Class II methanol masers near the massive protostar S255IR NIRS3: evolution and excitation of the $J_1 -J_0$ A$^{-+}$ series and a new maser line at 345.919 GHz
We present the results of the further investigation of the Class II methanol maser emission in the $14_1 - 14_0$ A$^{-+}$ transition at 349.1 GHz discovered in 2016 in the remarkable core S255IR-SMA1, harboring a $\sim$20 M$_\odot$ protostar NIRS3, which exhibited a disk-mediated accretion burst in 2015. The present study is based on the observations of this object with ALMA in Band 7 at the largest baselines, which provide the angular resolution of $\sim$15 mas. We estimated physical condition…

Nematic ordering in active fluids driven by substrate deformations: Mechanisms and patterning regimes
Varun Venkatesh, Amin Doostmohammadi
https://arxiv.org/abs/2505.24639

Nematic ordering in active fluids driven by substrate deformations: Mechanisms and patterning regimes
The interplay between active matter and its environment is central to understanding emergent behavior in biological and synthetic systems. Here, we show that coupling active nematic flows to small-amplitude deformations of a compliant substrate can fundamentally reorganize the system's dynamics. Using a model that combines active nematohydrodynamics with substrate mechanics, we find that contractile active nematics-normally disordered in flat geometries-undergo a sharp transition to long-range …

This https://arxiv.org/abs/2505.10907 has been replaced.
initial toot: https://mastoxiv.page/@a…

Effect of crystallinity on spin-orbit torque in 5$\textit{d}$ iridium oxide IrO$_{2}$
The 5$\textit{d}$ transition-metal oxides provide an intriguing platform for generating an efficient spin current due to a unique electronic structure dominated by 5d electrons with strong spin-orbit coupling. Here, we report on the effect of crystallinity on current-driven spin-orbit torque (SOT) in binary 5$\textit{d}$ iridium oxide IrO$_{2}$ thin films by controlling amorphous, polycrystalline, and epitaxial states. By conducting harmonic Hall measurement in bilayers composed of ferromagneti…

Quantum confinement effect in Sb thin films
Anuradha Wijesinghe, Yongxi Ou, Anjali Rathore, Chandima Edirisinghe, Pradip Adhikari, An-Hsi Chen, Dustin Gilbert, Anthony Richardella, Nitin Samarth, Joon Sue Lee
https://arxiv.org/abs/2507.23014

Quantum confinement effect in Sb thin films
Antimony (Sb), an element with strong spin-orbit coupling, is predicted to undergo a topological phase transition from a topological semimetal to a topological insulator as its dimensionality approaches the two-dimensional limit, driven by the quantum confinement effect. In this study, we investigate this transition in Sb thin films grown by molecular beam epitaxy, employing electrical transport measurements and angle-resolved photoemission spectroscopy (ARPES). Electrical transport measurement…

A Perturbative Approach to Symmetric Mass Generation
Simon Martin, Tarun Grover
https://arxiv.org/abs/2507.23032 https://arxiv.org/pdf/2507.23032

A Perturbative Approach to Symmetric Mass Generation
The Landau paradigm has been a powerful framework for understanding phase transitions involving spontaneous symmetry breaking. In contrast, phase transitions between two symmetric phases, where neither phase breaks any symmetry, remain less explored. One intriguing class of such transitions involves "symmetric mass generation" (SMG), where interactions drive a transition from a gapless symmetric phase to a gapped symmetric phase. In this work, we develop a controlled perturbative approach to st…

Revealing chiral-odd two-meson generalized distribution amplitudes in $e^- e^ \to (\pi \pi) (\pi \pi)$ reactions
Shohini Bhattacharya, Renaud Boussarie, Bernard Pire, Lech Szymanowski
https://arxiv.org/abs/2507.23529

Revealing chiral-odd two-meson generalized distribution amplitudes in $e^- e^+ \to (ππ) (ππ)$ reactions
We demonstrate that chiral-odd dimeson generalized distribution amplitudes (CO-GDAs)-nonperturbative objects encoding the transition of a quark-antiquark pair into two mesons-can be accessed in high-energy $e^- e^+$ annihilation into two meson pairs, each with a relatively low invariant mass. While chiral-even GDAs contribute to the leading one-photon amplitude, the chiral-odd sector enters via two-photon exchange. We show that the interference between these amplitudes leads to measurable effec…

Field driven Metal-Insulator transition in rhombohedral Bismuth and Arsenic crystals
N. K. Karn, Mukul S. Laad, V. P. S. Awana
https://arxiv.org/abs/2507.21661 https://

Field driven Metal-Insulator transition in rhombohedral Bismuth and Arsenic crystals
The metal to insulator (MIT) transition is accompanied with huge changes in physical responses by the control and tuning of experimental parameters like doping, pressure, chemical composition, and magnetic field. Here, we study the magnetic field driven MIT for two pnictides in their elemental form, namely Arsenic and Bismuth. At low temperatures, Bismuth shows an unusual behaviour of a re-entrant IMT at high fields in addition to a higher temperature MIT at smaller fields. However, Arsenic sho…

From the dynamic to the static glass transition via hypersonic measurements using Brillouin spectroscopy
Jan-Kristian Kr\"uger, Rafael J. Jim\'enez Riob\'oo, Bernd Wetzel, Andreas Klingler
https://arxiv.org/abs/2506.20808

From the dynamic to the static glass transition via hypersonic measurements using Brillouin spectroscopy
For the fragile, low-molecular-weight liquid diglycidyl ether of bisphenol A (DGEBA), we report on the dynamic glass transition and a further acoustic anomaly in the vicinity of the thermal glass transition based on hypersonic investigations of the longitudinal elastic modulus using Brillouin spectroscopy. This additional acoustic anomaly of the longitudinally polarized phonon is confirmed by the occurrence of an anomaly of the shear phonon at the same thermal glass transition temperature. Anal…

Polarization Probes of New Physics in Lepton-Flavor-Violating Hyperon Production from $e^- N \to \tau^- Y$ Scattering
Xin-Shuai Yan, Zhen-Qing Hu, Qin Chang, Ya-Dong Yang
https://arxiv.org/abs/2506.23804

Polarization Probes of New Physics in Lepton-Flavor-Violating Hyperon Production from $e^- N \to τ^- Y$ Scattering
While charged lepton-flavor-violating tau decays to strange mesons provide powerful probes of the underlying $τ\to\ell d \bar{s}$ transition, the corresponding decay modes involving hyperons are kinematically forbidden. To address this gap, we propose the quasi-elastic scattering processes $e^- N \to τ^- Y$. Within a general low-energy effective Lagrangian, we perform a comprehensive analysis of the final-state polarizations of both the $τ$ lepton and the hyperon $Y$, systematically addressi…

Topotactic phase transformation in correlated vanadium dioxide through oxygen vacancy ordering
Xuanchi Zhou, Xiaohui Yao, Xiaomei Qiao, Jiahui Ji, Guowei Zhou, Huihui Ji, Xiaohong Xu
https://arxiv.org/abs/2506.23445

Topotactic phase transformation in correlated vanadium dioxide through oxygen vacancy ordering
Controlling the insulator-metal transition (IMT) in correlated oxide system through oxygen vacancy ordering opens up a new paradigm for exploring exotic structural transformation and physical functionality. Oxygen vacancy serves as a powerful tuning knob for adjusting the IMT property in VO2, though driving topochemical reduction to V2O3 remains challenging due to structural incompatibility and competing phase instability. Here we unveil consecutive oxygen-vacancy-driven VO2-VO2-x-V2O3 topotact…

Replaced article(s) found for hep-ph. https://arxiv.org/list/hep-ph/new
[2/2]:
- Topological data analysis of the deconfinement transition in SU(3) lattice gauge theory
Daniel Spitz, Julian M. Urban, Jan M. Pawlowski

First-Principles Insights into Excitonic and Electron-Phonon Effects in van der Waals Heterostructures
Mohammad Ali Mohebpour, Carmine Autieri, Meysam Bagheri Tagani
https://arxiv.org/abs/2506.23570

First-Principles Insights into Excitonic and Electron-Phonon Effects in van der Waals Heterostructures
Motivated by the successful synthesis of isolated ZrS2 and HfS2 transition metal dichalcogenide (TMD) monolayers and inspired by their nearly identical lattice constants, we construct and investigate a vertical ZrS2/HfS2 van der Waals (vdW) heterostructure. Using first-principles calculations based on density functional theory (DFT) and many-body perturbation theory (MBPT), we explore its electronic, optical, and excitonic properties, with particular emphasis on excitonic effects and their temp…

Strained 2D TMD lateral heterojunctions via grayscale thermal-Scanning Probe Lithography
G. Zambito (Dipartimento di Fisica, Universit\`a di Genova, Genova, Italy), G. Ferrando (Dipartimento di Fisica, Universit\`a di Genova, Genova, Italy), M. Barelli (Dipartimento di Fisica, Universit\`a di Genova, Genova, Italy), M. Ceccardi (Dipartimento di Fisica, Universit\`a di Genova, Genova, Italy), F. Caglieris (CNR-SPIN, Genova, Italy), D. Marre (Dipartimento di Fisica, Universit\`a di Genov…

Strained 2D TMD lateral heterojunctions via grayscale thermal-Scanning Probe Lithography
Nanoscale tailoring of the optoelectronic response of 2D Transition Metal Dichalcogenides semiconductor layers (TMDs) has been achieved thanks to a novel strain engineering approach based on the grayscale thermal-Scanning Probe Lithography (t-SPL). This method allows the maskless nanofabrication of locally strained 2D MoS2-Au lateral heterojunction nanoarrays that are characterized by asymmetric electrical behavior. 2D MoS2 layers are conformally transferred onto grayscale t-SPL templates chara…

Alter-Piezoresponse in Two-Dimensional Lieb-Lattice Altermagnets
Xilong Xu, Li Yang
https://arxiv.org/abs/2506.22663 https://arxiv.or…

Alter-Piezoresponse in Two-Dimensional Lieb-Lattice Altermagnets
Altermagnetism, featuring alternating spin structures in reciprocal space, has sparked growing interest. Here, we predict novel real-space alternative piezomagnetic and piezoelectric responses in an emerging altermagnetic family of Lieb lattices, specifically transition-metal chalcogenides M2WS4 (M = Mn, Fe, Co). The unique S4T crystal-spin symmetry leads to distinct magnetic and electric responses depending on the direction of applied stress. When subjected to axial stress, they exhibit a gian…

Twist-Tunable Spin-to-Charge Conversion and Valley-Contrasting Effects in Graphene/TMDC Heterostructures
I. Wojciechowska, A. Dyrdal
https://arxiv.org/abs/2507.00650

Twist-Tunable Spin-to-Charge Conversion and Valley-Contrasting Effects in Graphene/TMDC Heterostructures
We consider graphene deposited on monolayers of such transition-metal dichalcogenides like MoSe$_2$, WSe$_2$, MoS$_2$, and WS$_2$. Our key objective is to study the impact of relative twist angle between the monolayers on the proximity-induced spin-orbital effects and orbital phenomena in graphene. To do this we used an effective model Hamiltonian for low-energy states, taken from available literature. The Green function formalism is used to calculate analytical formula for the spin Hall effect…

Temperature dependent Resonant X-ray Inelastic Scattering at Ni L3-edge for NaNiO2 and LiNiO2
Quentin Jacquet (Univ. Grenoble, Alpes, CEA, CNRS, Grenoble INP, IRIG, SyMMES, F-38000 Grenoble, France), Kurt Kummer (European Synchrotron Radiation Facility, F-38043 Grenoble Cedex, France), Marie Guignard (Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, Pessac, France), Elisa Grepin (Chimie du Solide-Energie, UMR 8260, College de France, Paris Cedex 05, France, Reseau sur le Stockage E…

Temperature dependent Resonant X-ray Inelastic Scattering at Ni L3-edge for NaNiO2 and LiNiO2
LiNiO2 is a promising cathode material for Li-ion battery but its atomic and electronic structure is under debate. Indeed, two sets of Ni-O distances are identified from local structural probes that are related with either Jahn-Teller distortion or bond disproportionation of NiO6 octahedra. Moreover, LiNiO2 undergoes a monoclinic to rhombohedral transition at 200 K which origin is still unclear. On the other hand, isostructural NaNiO2 shows differences from LiNiO2, as it is a well-known Jahn-Te…

Weak localization as probe of spin-orbit-induced spin-split bands in bilayer graphene proximity coupled to WSe$_2$
E. Icking, F. W\"ortche, A. W. Cummings, A. W\"ortche, K. Watanabe, T. Taniguchi, C. Volk, B. Beschoten, C. Stampfer
https://arxiv.org/abs/2505.24632

Weak localization as probe of spin-orbit-induced spin-split bands in bilayer graphene proximity coupled to WSe$_2$
Proximity coupling of bilayer graphene (BLG) to transition metal dichalcogenides (TMDs) offers a promising route to engineer gate-tunable spin-orbit coupling (SOC) while preserving BLG's exceptional electronic properties. This tunability arises from the layer-asymmetric electronic structure of gapped BLG, where SOC acts predominantly on the layer in contact with the TMD. Here, we present high-quality BLG/WSe$_2$ devices with a proximity-induced SOC gap and excellent electrostatic control. Opera…

Structural, dielectric, and ferroelectric characteristics of the low-temperature sintered 65PMN-35PT sample for electroceramic applications
B. Ramachandran, N. Sudarshan, G. Mangamma, M. S. Ramachandra Rao
https://arxiv.org/abs/2507.00614

Structural, dielectric, and ferroelectric characteristics of the low-temperature sintered 65PMN-35PT sample for electroceramic applications
A single-phase 65PMN-35PT ceramic was synthesized at a relatively low temperature (875 oC) using a modified columbite method. X-ray diffraction analysis confirmed the single-phase formation of perovskite 65PMN-35PT with a tetragonal structure. Morphological studies indicated that the sample consisted of small grains with a size of about 2 micro-m. The dielectric properties of the material demonstrate its relaxor behavior near the ferroelectric transition temperature, TC = 457 K. The saturation …

Unconventional magnon transport in antiferromagnet NiPS$_3$ induced by an anisotropic spin-flop transition
Peisen Yuan, Beatriz Mart\'in-Garc\'ia, Evgeny Modin, M. Xochitl Aguilar-Pujol, F\`elix Casanova, Luis E. Hueso
https://arxiv.org/abs/2505.23482

Unconventional magnon transport in antiferromagnet NiPS$_3$ induced by an anisotropic spin-flop transition
Nonlocal magnon transport can provide valuable insight into the magnetic properties of magnetic insulators (MIs). A spin-flop transition, a typical magnetic reorientation in antiferromagnets, is expected to affect mag non transport, but studies on this topic are still rare and remain challenging, especially for van der Waals materials. Here we demonstrate the unconventional magnon transport driven by an anisotropic spin-flop transition in the van der Waals antiferromagnet NiPS$_3$. Examining th…

Two-dimensional transition metal selenides family M2Se: A platform for superconductivity, band topology, and charge density waves
Shu-Xiang Qiao, Kai-Yue Jiang, Yu-Lin Han, Na Jiao, Ying-Jie Chen, Hong-Yan Lu, Ping Zhang
https://arxiv.org/abs/2506.20265

Two-dimensional transition metal selenides family M2Se: A platform for superconductivity, band topology, and charge density waves
MXenes and MBenes, which are two-dimensional (2D) transition metal carbides/nitrides and borides, have been extensively studied for their impressive properties. Recently, we reported a family of transition metal sulfides MSene (M2S) with rich properties [Phys. Rev. B 111, L041404 (2025)], it is worth studying whether selenides with similar structure also have rich properties. In this work, through high-throughput screening, we present a novel family of 2D transition metal selenides, M2Se. In th…

All-electric control of skyrmion-bimeron transition in van der Waals heterostructures
Lan Bo, Songli Dai, Xichao Zhang, Masahito Mochizuki, Xiaohong Xu, Zean Tian, Yan Zhou
https://arxiv.org/abs/2506.20984

All-electric control of skyrmion-bimeron transition in van der Waals heterostructures
Two-dimensional van der Waals materials offer a versatile platform for manipulating atomic-scale topological spin textures. In this study, using first-principles and micromagnetic calculations, we demonstrate a reversible transition between magnetic skyrmions and bimerons in a MoTeI/In_2Se_3 multiferroic heterostructure. The physical origin lies in the reorientation of the easy axis of magnetic anisotropy, triggered by the reversal of ferroelectric polarization. We show that the transition oper…