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arXiv preprints from January 1, 2026 through July 20, 2026 — 08:20:27 EST

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Posted in math-ph · 2026-01-13 · José M. Gracia-Bondía, Joseph C. Várilly

Algebras of distributions suitable for phase-space quantum mechanics. I

The twisted product of functions on $R^{2N}$ is extended to a $*$-algebra of tempered distributions which contains the rapidly decreasing smooth functions, the distributions of compact support, and all polynomials, and moreover is invariant under the Fourier transformation. The regularity properties of the twisted product are...

💬 0 commentsarXiv:2601.08180v1PDF
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Posted in astro-ph.SR · 2026-01-13 · Udomlerd Srisuchinwong, Jianzhao Zhou, Huan-Yu Teng, Guang-Yao Xiao, Bun'ei Sato, Takuya Takarada, Masashi Omiya, Hiroki Harakawa, Eiji Kambe, Hideyuki Izumiura, Michitoshi Yoshida, Yoichi Itoh, Hiroyasu Ando, Eiichiro Kokubo, Marc Hon, Yujuan Liu, Fei Zhao, Wei Wang, Meng Zhai, Shaolan Bi, Gang Zhao

Unraveling Year-Long Radial Velocity Variations in Red Clump Region -- I: Comprehensive analysis of a K0 Giant star, 2 Draconis

Slow-rotating evolved stars frequently exhibit radial velocity (RV) variations on annual timescales, complicated by instrumental systematics and aliasing in the one-year regime. Here we investigate the origin of the near-yearly periodicity in 2 Dra, a star located in the red-clump region, assessing possible causes between stellar...

💬 0 commentsarXiv:2601.08164v1PDF
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Posted in physics.flu-dyn · 2026-01-13 · Jing Zhang, Ruihan Qin, Zhixue Guo, Huantao Xu, Jiahui Zhou, Yun Bai

An Investigation into the Applicability of Friction Velocity Estimation Methods for the Channel with A Deposit Body

This study investigates how the deposit body influences friction characteristics by altering local flow fields, which is closely related to bed shear stress. Using generalized flume experiments, the study assesses the applicability of classical uniform flow friction models in deposit body river sections, revealing frictional changes...

💬 0 commentsarXiv:2601.08163v1PDF
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Posted in astro-ph.HE · 2026-01-13 · M. Anzorena, E. de la Fuente, K. Fujita, R. Garcia, Y. Hayashi, K. Hibino, N. Hotta, G. Imaizumi, Y. Katayose, C. Kato, S. Kato, T. Kawashima, K. Kawata, M. Kobayashi, S. Kobayashi, T. Koi, H. Kojima, P. Miranda, S. Mitsuishi, A. Mizuno, K. Munakata, Y. Nakamura, M. Nishizawa, Y. Noguchi, S. Ogio, M. Ohishi, M. Ohnishi, A. Oshima, M. Raljevic, H. Rivera, T. Saito, T. Sako, T. K. Sako, S. Shibata, A. Shiomi, M. Subieta, F. Sugimoto, N. Tajima, W. Takano, Y. Takeyama, M. Takita, N. Tamaki, Y. Tameda, K. Tanaka, R. Ticona, H. Tsuchiya, Y. Tsunesada, S. Udo, G. Yamagishi, Y. Yamanaka, K. Yamazaki, Y. Yokoe

Observation of the Forbush decrease on 2024 May 10, using the ALPAQUITA air-shower array at the 70-1000 GV rigidity range

The Andes Large area PArticle detector for Cosmic ray and Astronomy (ALPACA) is a new air-shower array experiment under construction in the Bolivian Andes, and its prototype ALPAQUITA surface array has been operating since 2023 April. In addition to the traditional $\ge$3-hit or $\ge$4-hit coincidences to trigger recording air-shower...

💬 0 commentsarXiv:2601.08154v1PDF
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Posted in nucl-th · 2026-01-13 · Qi Meng, Chang Xu

Light Nuclei embedded in a Nuclear Medium: Clustering and Mott Transitions

The clustering of nucleons is a fundamental phenomenon with broad implications for nuclear physics and astrophysics. In this work, we employ a microscopic in-medium few-body approach to systematically investigate the formation and dissolution of light clusters (deuteron, $\rm{^3H}$, $\rm{^3He}$, $α$-particle) embedded in nuclear...

💬 0 commentsarXiv:2601.08145v1PDF
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Posted in hep-ex · 2026-01-13 · Amit Pathak

Search for new physics with baryons at BESIII

The BESIII experiment at BEPCII provides a clean environment to test baryon-dark sector connections and baryon-number violation. Using $10^{10}$ $J/ψ$ events, searches were performed for $Σ^{+}\to p+\text{inv}$, $Ξ^{-}\toπ^{-}+\text{inv}$, and $\barΛ-Λ$ oscillations. No excess was observed, yielding $\mathcal{B}(Σ^{+}\to...

💬 0 commentsarXiv:2601.08140v1PDF
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Posted in physics.plasm-ph · 2026-01-13 · Wan Dong, Yi Wang, Yi-Fan Zhang, Yuan-Hong Song

The effect of surface quenching coefficients of $O_2(a^{1}Δg)$ and $O_2(b^{1}Σg^{+})$ on capacitively coupled $Ar$/$O_2$ discharge: A global/equivalent circuit model study

Capacitively coupled discharges operated in mixtures of $Ar$ and $O_2$ are extensively utilized in plasma etching and deposition processes due to the oxidative properties and precursor functionality of the reactive species produced in the discharge. In $Ar$/$O_2$ discharges, the surface quenching coefficient of $O_2(a^{1}Δg)$ is known...

💬 0 commentsarXiv:2601.08138v1PDF
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Posted in quant-ph · 2026-01-13 · Kazuhiro Seki, Yuta Kikuchi, Tomoya Hayata, Seiji Yunoki

Dissipative ground-state preparation of a quantum spin chain on a trapped-ion quantum computer

We demonstrate a dissipative protocol for ground-state preparation of a quantum spin chain on a trapped-ion quantum computer. As a first step, we derive a Kraus representation of a dissipation channel for the protocol recently proposed by Ding et al. [Phys. Rev. Res. 6, 033147 (2024)] that still holds for arbitrary temporal...

💬 0 commentsarXiv:2601.08137v2PDF
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Posted in quant-ph · 2026-01-13 · Thomas Barthel

Cost scaling of MPS and TTNS simulations for 2D and 3D systems with area-law entanglement

Tensor network states are an indispensable tool for the simulation of strongly correlated quantum many-body systems. In recent years, tree tensor network states (TTNS) have been successfully used for two-dimensional systems and to benchmark quantum simulation approaches for condensed matter, nuclear, and particle physics. In...

💬 0 commentsarXiv:2601.08132v1PDF
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Posted in cond-mat.soft · 2026-01-13 · Zhongqiang Xiong, Shigeyuki Komura, Masao Doi

Brownian motion of a rod threading through a ring with fixed ring-center

We study the Brownian motion of a rigid rod threading through a small fixed ring while the ring can freely rotate. We derive the distribution function for the sliding displacement and the unit vector along the rod both at equilibrium and non-equilibrium. The equilibrium distribution is quadratic in the sliding displacement and is...

💬 0 commentsarXiv:2601.08130v2PDF
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Posted in cond-mat.mtrl-sci · 2026-01-13 · Zhong Shen, Jun Chen, Xiaoyan Yao, Shuai Dong

Magnetoelectric torque in polar magnetic bilayers

Energy-efficient fast switching of spin orientations or textures is a core issue of spintronics, which is highly demanded but remains challenging. Different from the mainstream routes based on spin-transfer torque or spin-orbit torque, here we propose another mechanism coined as magnetoelectric torque to switch the magnetization in...

💬 0 commentsarXiv:2601.08117v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-13 · Takanori Ishii, Kaoru Hisama, Kohei Shinohara

Symmetry-aware Conditional Generation of Crystal Structures Using Diffusion Models

The application of generative models in crystal structure prediction (CSP) has gained significant attention. Conditional generation--particularly the generation of crystal structures with specified stability or other physical properties has been actively researched for material discovery purposes. Meanwhile, the generative models...

💬 0 commentsarXiv:2601.08115v1PDF
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Posted in cond-mat.soft · 2026-01-13 · Lauren Dutcher, Benjamin Baylis, John R. Dutcher, Elie Raphael, Kari Dalnoki-Veress

Spreading and absorption of silicone oil droplets on silicone elastomer films

When a liquid droplet completely wets a hard substrate, its spreading dynamics follow Tanner's law, with the droplet radius growing as the one-tenth power of time. Here, we investigate how these dynamics change when silicone oil droplets spread on soft silicone elastomer and gel films supported by a rigid silicon substrate. While the...

💬 0 commentsarXiv:2601.08114v1PDF
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Posted in astro-ph.GA · 2026-01-13 · Jordan C. J. D'Silva, Simon P. Driver, Aaron S. G. Robotham, Andrew Battisti, Elisabete da Cunha, Luke J. M. Davies, Stephen Eales, Claudia del P. Lagos

The contribution of stars, dust, neutral gas and supermassive black holes in galaxies to the cosmic baryon inventory

We compute the cosmic stellar, dust and neutral gas mass history at $0<z\lesssim3$ using ProSpect spectral energy distribution modelling of $\approx 800 \, 000$ galaxies in the Galaxy and Mass Assembly (GAMA) survey and the Deep Extragalactic VIsible Legacy Survey (DEVILS). The cosmic dust mass history broadly follows the shape of the...

💬 0 commentsarXiv:2601.08112v3PDF
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Posted in physics.app-ph · 2026-01-13 · Ané Kritzinger, Ralf Mouthaan, Graham D. Bruce, Eric Wilkes, Kishan Dholakia

Through the bottle authentication of red wine using near-IR fluorescence spectroscopy

A major unaddressed challenge for food science remains the accurate characterisation of contents in sealed containers with a non-invasive method. This issue is particularly pressing for tackling fraud in the red wine industry, valued at billions of dollars globally, where product authenticity, brand reputation, and consumer trust are...

💬 0 commentsarXiv:2601.08298v1PDF
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Posted in physics.flu-dyn · 2026-01-13 · Vedad Dzanic, Sumesh P. Thampi, Julia M. Yeomans

Bridging Elastic and Active Turbulence

Remarkably, even under negligible inertia, the addition of microstructural agents can generate chaotic flow fields. Such behavior can arise in polymer solutions, leading to elastic turbulence, or from active, self-driven particles, which generate active turbulence. Here, we demonstrate a close and hitherto unrecognized connection...

💬 0 commentsarXiv:2601.08296v2PDF
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Posted in quant-ph · 2026-01-13 · Prosanta Pal, Shubhanshu Karoliya, Gargee Sharma, Ramakrishna Podila

A Preparation Nonstationarity Loophole in Superconducting-Qubit Bell Tests

Bell or Clauser-Horne-Shimony-Holt (CHSH) tests on superconducting quantum processors are commonly interpreted under the assumption that repeated circuit executions sample a single, stationary preparation ensemble. Here we show that this assumption can be violated on contemporary hardware, with direct implications for the...

💬 0 commentsarXiv:2601.08290v1PDF
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Posted in quant-ph · 2026-01-13 · Xiaodong Zheng, Xu Jing, Chenbo Liu, Yufu Li, Runqiu He, Lina Xia, Fei Wang, Yuechan Kong, Tangsheng Chen, Liangliang Lu, Jiayun Dai, Bin Niu

Efficient and broadband quantum frequency comb generation in a monolithic AlGaAs-on-insulator microresonator

The exploration of photonic systems for quantum information processing has generated widespread interest in multiple cutting-edge research fields. Photonic frequency encoding stands out as an especially viable approach, given its natural alignment with established optical communication technologies, including fiber networks and...

💬 0 commentsarXiv:2601.08289v1PDF
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Posted in astro-ph.HE · 2026-01-13 · Liang-Gui Zhu, Lei He, Xian Chen, Wen Zhao

Constraining the Fraction of LIGO/Virgo/KAGRA Binary Black Hole Merger Events Associated with Active Galactic Nucleus Flares

The formation channels of binary black hole (BBH) mergers detected by the LIGO/Virgo/KAGRA (LVK) network remain uncertain. While BBH mergers occurring inside active galactic nucleus (AGN) disks may interact with surrounding gas and generate observable optical flares. We test this scenario by quantifying the spatial and temporal...

💬 0 commentsarXiv:2601.08286v2PDF
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Posted in cond-mat.mtrl-sci · 2026-01-13 · Minhee Kang, Woojin Choi, Choongyu Hwang, Jinwoong Hwang

Giant Hole-doping in 2H-WSe2 via Ta Substitution

The family of transition metal dichalcogenides (TMDCs) has been regarded as promising candidates for future electronics, valleytronics, spintronics, and optoelectronics. While most of TMDCs are intrinsic n-type semiconductors due to electron donation from chalcogen vacancies, realizing intrinsic p-type TMDCs and achieving precise...

💬 0 commentsarXiv:2601.08284v1PDF
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Posted in physics.optics · 2026-01-13 · I. V. Kolokolov, V. V. Lebedev

Perturbation theory for phase correlations of a light wave propagating in a turbulent medium

We theoretically investigate the correlation functions of the phase of a light wave propagating through a turbulent medium. We use an equation for the logarithm of a wave packet envelope, which includes a second-order nonlinear term. Based on this equation, we develop a diagrammatic technique to calculate corrections to the...

💬 0 commentsarXiv:2601.08279v1PDF
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Posted in physics.optics · 2026-01-13 · V. A. Bogachev, I. V. Kolokolov, V. V. Lebedev, A. V. Nemtseva, F. A. Starikov

Correlations of the phase gradients of the light wave propagating in a turbulent medium in the regime of weak scintillations

We investigate numerically correlation functions of the phase of light waves that propagate through turbulent media. Special attention is paid to the off-diagonal component of the correlation function of the phase gradients which is insensitive to the outer scale of turbulence. The results of our simulations are in a good agreement...

💬 0 commentsarXiv:2601.08272v1PDF
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Posted in astro-ph.HE · 2026-01-13 · Ryuichiro Akaho, Hiroki Nagakura, Wakana Iwakami, Shun Furusawa, Akira Harada, Hirotada Okawa, Hideo Matsufuru, Kohsuke Sumiyoshi, Shoichi Yamada

Bifurcated Impact of Neutrino Fast Flavor Conversion on Core-collapse Supernovae Informed by Multi-angle Neutrino Radiation Hydrodynamics

In this {\it Letter}, we present a compelling and robust argument for the roles of neutrino fast flavor conversion (FFC) in the explosion mechanism of core-collapse supernova (CCSN), combining the {\it multi-angle} FFC subgrid model rooted in quantum kinetic theory with the multi-dimensional four-species Boltzmann neutrino radiation...

💬 0 commentsarXiv:2601.08269v2PDF
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Posted in physics.app-ph · 2026-01-13 · Kaifei Feng, Pai Peng

Slit-Induced Reflection Mode Conversion Between Fundamental Lamb Modes in Elastic Plates with Low-Frequency and Broadband Response

We present a compact slit-based interface that enables reflection mode conversion in an elastic plate by transforming an incident lowest-order antisymmetric Lamb mode into a reflected lowest-order symmetric Lamb mode. The interface is realized by introducing inclined vacuum slits along the lateral sides of the plate. This geometry...

💬 0 commentsarXiv:2601.08264v1PDF
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Posted in gr-qc · 2026-01-13 · Farrukh A. Chishtie

BRST Symmetry Violation and Fundamental Limitations of Asymptotic Safety in Quantum Gravity

The asymptotic safety program assumes that quantum gravity becomes renormalizable through ultraviolet fixed points in metric-based couplings. We demonstrate that this approach {encounters fundamental symmetry violations} across multiple independent criteria, all traceable to a single fundamental cause: the breakdown of general...

💬 0 commentsarXiv:2601.08886v1PDF