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Physics

arXiv preprints from January 1, 2026 through September 8, 2026 — 20:45:32 EST

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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
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Posted in physics.ed-ph · 2026-01-15 · M. J. Everitt, M. T. Greenaway, S. L. Bugby, S. N. A. Duffus

Systemically Designed Degrees for Real-World Challenges: A case study on Physics curriculum design at Loughborough University

We present a ground-up redesign of the undergraduate physics degree at Loughborough University, driven by the principle of authenticity in academic and industrial practice. Departing from conventional incremental reforms, we adopt a systems-engineering approach to programme-level curriculum design, treating the degree as an integrated...

💬 0 commentsarXiv:2601.10219v1PDF
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Posted in hep-th · 2026-01-15 · Saikat Biswas

Entanglement in $\text{T}\bar{\text{T}}$ and root-$\text{T}\bar{\text{T}}$ deformed AdS$_3$/CFT$_2$

In this work, we investigate the effects of $\text{T}\bar{\text{T}}$ and root-$\text{T}\bar{\text{T}}$ deformations on reflected and entanglement entropy in the context of both pure and mixed state entanglement measures. Utilizing a mixed boundary condition framework, we analyze how these deformations modify entanglement structures...

💬 0 commentsarXiv:2601.10213v1PDF
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Posted in cond-mat.stat-mech · 2026-01-15 · Mariel Kempa, Markus Kraft, Robin Steinigeweg, Jochen Gemmer, Jiaozi Wang

Random matrix theory universality of current operators in spin-$S$ Heisenberg chains

Quantum chaotic systems exhibit certain universal statistical properties that closely resemble predictions from random matrix theory (RMT). With respect to observables, it has recently been conjectured that, when truncated to a sufficiently narrow energy window, their statistical properties can be described by an unitarily invariant...

💬 0 commentsarXiv:2601.10211v1PDF
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Posted in quant-ph · 2026-01-15 · J. Leibig, M. Hörmann, A. Langheld, A. Schellenberger, K. P. Schmidt

Quantitative approach for the Dicke-Ising chain with an effective self-consistent matter Hamiltonian

In the thermodynamic limit, the Dicke-Ising chain maps exactly onto an effective self-consistent matter Hamiltonian with the photon field acting solely as a self-consistent effective field. As a consequence, no quantum correlations between photons and spins are needed to understand the quantum phase diagram. This enables us to...

💬 0 commentsarXiv:2601.10210v1PDF
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Posted in quant-ph · 2026-01-15 · S. Messelot, A. Leblanc, J. -S. Tettekpoe, F. Lefloch, Q. Ficheux, J. Renard, É. Dumur

Coherence Limits in Interference-Based cos(2$\varphi$) Qubits

We investigate the coherence properties of parity-protected $\cos(2\varphi)$ qubits based on interferences between two Josephson elements in a superconducting loop. We show that qubit implementations of a $\cos(2\varphi)$ potential using a single loop, such as those employing semiconducting junctions, rhombus circuits, flowermon and...

💬 0 commentsarXiv:2601.10209v1PDF
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Posted in quant-ph · 2026-01-15 · Satyam Pandey, Abhimanyu Magapu, Prabhat Anand, Ankit Khandelwal, M. Girish Chandra

QDsiM: A Noise-Aware Simulation Toolkit for Quantum Diamond Microscope

The nitrogen-vacancy (NV) center in diamond is a leading solid-state platform for room-temperature quantum magnetometry owing to its long spin coherence times, optical spin initialization and readout, and high sensitivity to magnetic, electric, and thermal perturbations. As NV-based optically detected magnetic resonance (ODMR) systems...

💬 0 commentsarXiv:2601.11649v1PDF
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Posted in quant-ph · 2026-01-15 · Nirupam Basak, Goutam Paul, Pritam Chattopadhyay

Noise-Resilient Quantum Evolution in Open Systems through Error-Correcting Frameworks

We analyze quantum state preservation in open quantum systems using quantum error-correcting (QEC) codes explicitly embedded in microscopic system-bath models. Rather than assuming abstract quantum channels, we consider multi-qubit registers coupled to bosonic thermal environments, derive a second-order master equation for the reduced...

💬 0 commentsarXiv:2601.10206v2PDF
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Posted in quant-ph · 2026-01-15 · Zheng Zhao, Weifeng Zhuang, Yanwu Gu, Peng Qian, Xiao Xiao, Dong E. Liu

Topology-Aware Block Coordinate Descent for Qubit Frequency Allocation of Superconducting Quantum Processors

Pre-execution calibration is a major bottleneck for operating superconducting quantum processors, and qubit frequency allocation is especially challenging due to crosstalk-coupled objectives. We establish that the widely-used Snake optimizer is mathematically equivalent to Block Coordinate Descent (BCD), providing a rigorous...

💬 0 commentsarXiv:2601.10203v2PDF
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Posted in quant-ph · 2026-01-15 · Maxwell West

On the average-case complexity of learning states from the circular and Gaussian ensembles

Studying the complexity of states sampled from various ensembles is a central component of quantum information theory. In this work we establish the average-case hardness of learning, in the statistical query model, the Born distributions of states sampled uniformly from the circular and (fermionic) Gaussian ensembles. These ensembles...

💬 0 commentsarXiv:2601.10197v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-15 · Enrique Burzurí, Daniel Granados, Emilio M. Pérez

Physically Unclonable Functions Based on Single-Walled Carbon Nanotubes: A Scalable and Inexpensive Method toward Unique Identifiers

A physically un-clonable function (PUF) is a physical system that cannot be reproduced or predicted and therefore is a good basis to build security and anti-counterfeiting applications. The unclonability of PUFs typically stems from the randmoness induced in a system during sophisticated fabrication methods. It is precisely this...

💬 0 commentsarXiv:2601.10196v1PDF
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Posted in quant-ph · 2026-01-15 · Eliya Blumenthal, Natan Karaev, Shay Hacohen-Gourgy

Experimental Realization of Rabi-Driven Reset for Fast Cooling of a High-Q Cavity

High-Q bosonic memories are central to hardware-efficient quantum error correction, but their isolation makes fast, high-fidelity reset a persistent bottleneck. Existing approaches either rely on weak intermode cross-Kerr conversion or on measurement-based sequences with substantial latency. Here we demonstrate a hardware-efficient...

💬 0 commentsarXiv:2601.10385v1PDF
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Posted in cond-mat.soft · 2026-01-15 · Rigoberto Advincula, Jihua Chen

Advanced Manufacturing with Renewable and Bio-based Materials: AI/ML workflows and Process Optimization

Advanced manufacturing with new bio-derived materials can be achieved faster and more economically with first-principle-based artificial intelligence and machine learning (AI/ML)-derived models and process optimization. Not only is this motivated by increased industry profitability, but it can also be optimized to reduce waste...

💬 0 commentsarXiv:2601.10382v2PDF
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Posted in math-ph · 2026-01-15 · C. Robson

Phase Space structure on Clifford Algebras

I argue that the Hodge structure on a Euclidean Clifford algebra $Cl(n)$ provides a way to generalise Kähler structure to higher dimensions, in the sense that the paired variables are now associated with $k-$ and $(n-k)-$ dimensional subspaces rather than with vectors. This puts a phase space structure on Clifford algebras, and so...

💬 0 commentsarXiv:2601.10381v1PDF
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Posted in quant-ph · 2026-01-15 · Shrigyan Brahmachari, Shuchen Zhu, Iman Marvian, Yu Tong

Learning Hamiltonians in the Heisenberg limit with static single-qubit fields

Learning the Hamiltonian governing a quantum system is a central task in quantum metrology, sensing, and device characterization. Existing Heisenberg-limited Hamiltonian learning protocols either require multi-qubit operations that are prone to noise, or single-qubit operations whose frequency or strength increases with the desired...

💬 0 commentsarXiv:2601.10380v1PDF
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Posted in hep-ph · 2026-01-15 · Tuomas Lappi, Risto Paatelainen, Mikko Seppälä

Two-Loop DGLAP Splitting Functions from Light Cone Perturbation Theory

We perform a two-loop calculation in Light Cone Perturbation Theory (LCPT) to evaluate the next-to-leading order nonsinglet splitting function. Our calculation demonstrates the methodology and feasibility of performing higher order calculations in LCPT. Since in Hamiltonian perturbation theory the longitudinal $k^+$ momentum is always...

💬 0 commentsarXiv:2601.10374v1PDF