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Physics

arXiv preprints from January 1, 2026 through July 21, 2026 — 09:50:01 EST

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Posted in hep-ph · 2026-01-15 · Hidefumi Matsuda, Koichi Hattori, Koichi Murase

Physics-informed neural networks for angular-momentum conservation in computational relativistic spin hydrodynamics

Theoretical developments in relativistic spin hydrodynamics, which describes the macroscopic transport of spin angular momentum alongside other fundamental conserved quantities, have progressed rapidly since the experimental observation of the global spin polarization of $Λ$ hyperons in relativistic heavy-ion collision experiments....

💬 0 commentsarXiv:2601.10136v1PDF
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Posted in physics.comp-ph · 2026-01-15 · Ming Liu, Yosuke Hasegawa

A volume penalization method for solving conjugate scalar transport with interfacial jump conditions

Conjugate scalar transport with interfacial jump conditions on complex interfacial geometries is common in thermal and chemical processes, while its accurate and efficient simulations are still quite challenging. In the present study, a novel treatment of a two-phase interface in the volume penalization method, a kind of immersed...

💬 0 commentsarXiv:2601.10134v1PDF
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Posted in gr-qc · 2026-01-15 · Santosh V. Lohakare, S. K. Maurya, Aaisha Al Qassabi, B. Mishra

Hubble Tension and Dark Energy in Teleparallel Gauss-Bonnet Gravity: New Constraints from DESI BAO, Pantheon$^+$ and Hubble Data

We explore the cosmological dynamics of a teleparallel Gauss-Bonnet gravity model defined by the torsion scalar $T$ and the torsion-based Gauss-Bonnet invariant $T_{\mathcal{G}}$, deriving modified Friedmann equations for a flat FLRW Universe and corresponding linear scalar perturbation equations. Using a numerical approach, we solve...

💬 0 commentsarXiv:2601.10127v1PDF
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Posted in hep-ph · 2026-01-15 · Chong-long Xie, Guo-yun Shao, Ming-zheng-xuan Wu, Wei-bo He

Bulk viscosity of quark matter across the QCD phase transitions

Based on the kinetic theory with relaxation time approximation, we investigate the bulk viscosity ($ζ$) and its ratio to shear viscosity ($ζ/η$) of quark matter at finite temperature and chemical potential with the in-medium particle masses derived in the 2+1 flavor Polyakov-loop improved Nambu--Jona-Lasinio (PNJL) model. We explore...

💬 0 commentsarXiv:2601.10126v1PDF
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Posted in astro-ph.SR · 2026-01-15 · Junjie Wu, Ning-Chen Sun, Zexi Niu, Tianmang Zhang, Chun Chen, Xiaohan Chen, Nancy Elias-Rosa, Morgan Fraser, Xinyi Hong, Justyn Maund, Cesar Rojas-Bravo, Anyu Wang, Beichuan Wang, Ziyang Wang, Qiang Xi, Linxi Zhang, Yinuo Zhang

Direct Detection of Type II-P Supernova Progenitors with the Euclid and CSST Surveys

A central goal in supernova (SN) research is to identify and characterize their progenitors. However, this is very difficult due to the limited archival images with sufficient depth and spatial resolution required for direct progenitor detection and due to the circumstellar dust which often biases the estimate of their intrinsic...

💬 0 commentsarXiv:2601.10121v1PDF
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Posted in quant-ph · 2026-01-15 · Calum F. Shelden, Jeremy N. Munday

Casimir-force spectroscopy of broadband optical response

Broadband optical response governs light-matter interactions across photonics, plasmonics, thermal radiation, and quantum fluctuation electrodynamics, yet determining a continuous dielectric function over many decades in frequency typically requires combining multiple spectroscopies, extrapolations, and material models. Here we show...

💬 0 commentsarXiv:2601.10118v2PDF
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Posted in physics.flu-dyn · 2026-01-15 · Aricia Rinkens, Clemens V. Verhoosel, Alexandra Alicke, Patrick D. Anderson, Nick O. Jaensson

Bayesian Model Selection for Complex Flows of Yield Stress Fluids

Modeling yield stress fluids in complex flow scenarios presents significant challenges, particularly because conventional rheological characterization methods often yield material parameters that are not fully representative of the intricate constitutive behavior observed in complex conditions. We propose a Bayesian uncertainty...

💬 0 commentsarXiv:2601.10115v1PDF
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Posted in quant-ph · 2026-01-15 · Jiwon Heo, Sojeong Park, Changhun Oh

Classical simulation of a quantum circuit with noisy magic inputs

Magic states are essential for universal quantum computation and are widely viewed as a key source of quantum advantage, yet in realistic devices they are inevitably noisy. In this work, we characterize how noise on injected magic resources changes the classical simulability of quantum circuits and when it induces a transition from...

💬 0 commentsarXiv:2601.10111v2PDF
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Posted in quant-ph · 2026-01-15 · Rodrigo M. Sanz, Emilio Annoni, Stephen C. Wein, Carmen G. Almudever, Shane Mansfield, Ellen Derbyshire, Rawad Mezher

Exponential improvement in benchmarking multiphoton interference

Several photonic quantum technologies rely on the ability to generate multiple indistinguishable photons. Benchmarking the level of indistinguishability of these photons is essential for scalability. The Hong-Ou-Mandel dip provides a benchmark for the indistinguishability between two photons, and extending this test to the...

💬 0 commentsarXiv:2601.10289v1PDF
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Posted in hep-th · 2026-01-15 · Anamaria Hell, Elisa G. M. Ferreira, Dieter Lust, Misao Sasaki

The recipe for the degrees of freedom

We consider the question of counting the degrees of freedom in theoretical models, with an emphasis on theories of fields and gravity. Among the possible approaches, the Hamiltonian formulation remains one of the most systematic and robust tools. However, it can easily become long and technically involved. In this work, we present a...

💬 0 commentsarXiv:2601.10288v1PDF
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Posted in physics.optics · 2026-01-15 · E. O. Kamenetskii

Quantum bianisotropy in light-matter interaction

Quantum bianisotropy and chirality are fundamental concepts in light matter interaction that describe how materials with broken symmetries respond to electromagnetic fields at the level of macroscopic quantum electrodynamics. In quantum bianisotropy, magnetoelectric (ME) energy plays a critical role in mediating and enhancing light...

💬 0 commentsarXiv:2601.10287v1PDF
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Posted in astro-ph.EP · 2026-01-15 · Angie Daniela Guzmán Franco, Sofia Savvidou, Bertram Bitsch

How disc initial conditions sculpt the atmospheric composition of giant planets

Past studies have revealed the dependency of the disc parameters (mass, radius, viscosity, grain fragmentation velocity, dust-to-gas ratio) on the formation of giant planets, where more massive discs seem beneficial for giant planet formation. It is unclear how the different disc properties influence the composition of forming giant...

💬 0 commentsarXiv:2601.10285v1PDF
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Posted in physics.geo-ph · 2026-01-15 · Huilin Zhou, Xin Liu, Kexiang Wang, Shufan Hu

Model-Driven GPR Inversion Network With Surrogate Forward Solver

Data-driven deep learning is considered a promising solution for ground-penetrating radar (GPR) full-waveform inversion (FWI), while its generalization ability is limited due to the heavy reliance on abundant labeled samples. In contrast, Deep unfolding network (DUN) usually exhibits better generalization by integrating model-driven...

💬 0 commentsarXiv:2601.10284v1PDF
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Posted in astro-ph.SR · 2026-01-15 · Dmitrii Kolotkov, Anne-Marie Broomhall, Laura Jade Millson, Sergey Belov

Cycle dependence of helioseismic oscillations above the acoustic cut-off frequency

Helioseismic and recent asteroseismic observations reveal fine structure in the power spectrum with alternating peaks and troughs above the acoustic cut-off frequency. This structure is interpreted as the interference patterns of high-frequency acoustic waves excited in the solar interior and propagating into the atmosphere, known as...

💬 0 commentsarXiv:2601.10283v1PDF
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Posted in quant-ph · 2026-01-15 · Maristella Crotti, Luca Razzoli, Luigi Giannelli, Giuseppe A. Falci, Giuliano Benenti

Optimal control of a dissipative micromaser quantum battery in the ultrastrong coupling regime

We investigate the open-system dynamics of a micromaser quantum battery in the ultrastrong-coupling (USC) regime. The battery consists of a quantized harmonic mode sequentially interacting, via the Rabi Hamiltonian, with a stream of qubits acting as chargers. USC enhances the charging speed but also induces unbounded energy growth and...

💬 0 commentsarXiv:2601.10281v2PDF
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Posted in physics.chem-ph · 2026-01-15 · Daniel Timmer, Krishan Kumar, Jan P. Götze, Peter Saalfrank, Antonietta De Sio, Christoph Lienau

Nonadiabatic couplings drive ultrafast, mode-selective intramolecular vibrational energy redistribution in flavins

Flavins are the chromophores in several blue-light-sensitive photoreceptor proteins and act as redox cofactors in many enzymes relevant for biological processes. Despite their biological relevance and numerous, detailed optical investigations of their photophysical properties, the ultrafast nonequilibrium dynamics of their elementary...

💬 0 commentsarXiv:2601.10273v1PDF
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Posted in hep-ph · 2026-01-15 · ESSnuSB, :, Monojit Ghosh

Physics with next generation neutrino experiments: ESSnuSB

In this proceedings we explore the physics potential of the ESSnuSBplus setup to study beam and non-beam based physics scenarios in both standard and new physics cases. The ESSnuSBplus setup consists of three neutrino sources: the main ESS linac, a low energy monitored neutrino beam and a low energy nuSTORM facility and three...

💬 0 commentsarXiv:2601.10271v1PDF
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Posted in physics.optics · 2026-01-15 · Li Wang, Ning Tao, Wei Liu, Xiaoli Li, Yi He, Xue Yang, Jiangang Sun, Cunlin Zhang

Pulse thermal imaging of FUHAO bronze artifact

The accurate identification of historical restoration traces and material degradation is essential for the scientific preservation of ancient bronzes. In this study, the prestigious FUHAO bronze artifact (late Shang period, 13th-11th century BCE) was non-destructively examined using pulsed thermal imaging (PT). By combining single-...

💬 0 commentsarXiv:2601.10265v1PDF
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Posted in physics.optics · 2026-01-15 · Jorge Olmos-Trigo

An Exact Energy Conservation Law for Magneto-Optical Nanoparticles

Energy conservation imposes fundamental bounds on the polarizabilities of nanoparticles (NPs). While such bounds are well established for isotropic and bianisotropic NPs, they remain unexplored for magneto-optical NPs. Here, we derive the exact energy-conservation law governing the electric and magnetic dipolar response of axially...

💬 0 commentsarXiv:2601.10255v1PDF
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Posted in nucl-th · 2026-01-15 · S. Ghinescu, S. Stoica

Updated Results for Kinematic Factors in Double Beta Decays

Accurate calculations of phase space factors (PSFs), electron energy spectra and angular correlations are essential for designing and interpreting double-beta decay (DBD) experiments. These quantities help maximize sensitivity to potential signals, distinguish between different decay modes and interpret the data. In this work we...

💬 0 commentsarXiv:2601.10247v2PDF
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Posted in quant-ph · 2026-01-15 · Masahito Hayashi, Hao-Chung Cheng, Li Gao

Adversarial Hypothesis Testing for Quantum Channels

This paper presents a systematic study of adversarial hypothesis testing for both quantum-quantum (QQ) and classical-quantum (CQ) channels. Unlike conventional channel discrimination, we consider a framework where the sender, Alice, selects the channel input adversarially to minimize Bob's distinguishability. We analyze this problem...

💬 0 commentsarXiv:2601.10243v1PDF
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Posted in astro-ph.IM · 2026-01-15 · David Gruner, Sydney A. Barnes, Ansgar Reiners, Klaus G. Strassmeier, Cristina Chiappini, Jörg Weingrill, Michael Weber, Ilya Ilyin, Thomas Granzer, Özgün Adebali, Jean-Michel Désert, Marica Valentini, Dario Fritzewski, Paolo Ventura, Alfio Bonanno, Jose-Dias do Nascimento, Jorge Melendez, Santosh Joshi, Yong-Cheol Kim

Large-scale time-series spectroscopy for stellar ages

To date, Galactic Astronomy has largely concerned itself with astrophysical processes, and with the locations, space motions and compositions of objects. Consider, for example, the elucidation of the components of the Galaxy over the past decades, its mapping as enabled by Gaia and its predecessors, the photometric and spectroscopic...

💬 0 commentsarXiv:2601.10240v1PDF
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Posted in gr-qc · 2026-01-15 · Emma Bruyère, Cyril Pitrou

Gravitational lensing beyond the eikonal approximation

Waves propagating through a gravitational potential exhibit wave-optics effects when their wavelength is not significantly smaller than the lensing scales. We study the propagation of a scalar wave, governed by the Klein-Gordon equation in curved spacetime, to focus on effects on amplitude and phase, while leaving aside the issue of...

💬 0 commentsarXiv:2601.10239v1PDF
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Posted in physics.flu-dyn · 2026-01-15 · Ming Liu, Yosuke Hasegawa

Volume penalization method for simulating flows around a rotating solid with multiple reference frame and sliding mesh

Despite the significant role of turbomachinery in fluid-based energy transfer, precise simulation of rotating solid objects with complex geometry is a challenging task. In the present study, the volume penalization method (VPM) is combined with multiple reference frame (MRF) and sliding mesh (SLM), respectively, so as to develop...

💬 0 commentsarXiv:2601.10230v1PDF
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Posted in cond-mat.dis-nn · 2026-01-15 · Chenxin Qin, Chenyan Wang, Mouyang Cheng, Ji Chen

Integral Variable Range Hopping for Modeling Electrical Transport in Disordered Systems

The variable range hopping (VRH) model has been widely applied to describe electrical transport in disordered systems, providing theoretical formulas to fit temperature-dependent electric conductivity. These models rely on oversimplified assumptions that restrict their applicability and result in problematic fitting behaviors, yet...

💬 0 commentsarXiv:2601.10226v1PDF