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arXiv preprints from January 1, 2026 through July 20, 2026 — 03:12:10 EST

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Posted in quant-ph · 2026-01-14 · Lucas Caron, Hector Simon, Hugo Basset, Romaric Journet, Rosa Tualle-Brouri

Generation of Large Coherent-State Superpositions in Free-Space Optical Pulses

The generation of non-Gaussian quantum states is a key requirement for universal continuous-variable quantum information processing. We report the experimental generation of large-amplitude squeezed coherent-state superpositions (squeezed cat states) on free-space optical pulses, reaching an amplitude of $α= 2.47$, which, to our...

💬 0 commentsarXiv:2601.09672v1PDF
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Posted in astro-ph.SR · 2026-01-14 · Frederick J. Vrba, Adam C. Schneider, Jeffrey A. Munn, Arne A. Henden, Christain B. Luginbuhl, Conard C. Dahn, Harry H. Guetter, Blaise J. Canzian, Trudy M. Tilleman, Scott E. Dahm, Stephen J. Williams, Justice E. Bruursema, J. Davy Kirkpatrick, Adam J. Burgasser

Parallaxes, Proper Motions, and Near-Infrared Photometry for 173 L and T Dwarfs From The US Naval Observatory Infrared Astrometry Program

We present near-infrared parallax and proper motion astrometry for 74 L-dwarfs and 99 T-dwarfs, as single objects or in binary systems, obtained with the ASTROCAM astrometric imager on the USNO, Flagstaff Station 1.55-m telescope over two observing periods. For all 173 objects the median number of observational epochs was 62 with a...

💬 0 commentsarXiv:2601.09671v1PDF
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Posted in astro-ph.GA · 2026-01-14 · Nasser M. Ahmed

Discovery of a new open cluster as a companion to Czernik 38 cluster and its associated complex tide, using Gaia DR3

We utilize Gaia DR3 data to report the discovery of a new star cluster, Nasser 1, located 32 arcmin from Czernik 38 at coordinates $α= 282.11 \pm 0.05$ and $δ= 4.56 \pm 0.05$. Using a variable membership probability threshold technique with pyUPMASK, we confirm Nasser 1 as a genuine open cluster. It exhibits a distinct King profile...

💬 0 commentsarXiv:2601.09670v1PDF
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Posted in cond-mat.mes-hall · 2026-01-14 · Shaofeng Huang, Chen Fang

Resolution of Topology and Geometry from Momentum-Resolved Spectroscopies

Extracting the complete quantum geometric and topological character of Bloch wavefunctions from experiments remains a challenge in condensed matter physics. Here, we resolve this by introducing the "wavefunction form factor" (WFF) matrix, a quantity directly constructible from intensities in momentum- and energy-resolved...

💬 0 commentsarXiv:2601.10677v1PDF
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Posted in gr-qc · 2026-01-14 · Ozan Sargın

Constant-roll $β$-exponential inflation: Palatini formalism

This paper investigates the inflationary dynamics of a $β$-exponential potential model within the framework of non-minimally coupled quadratic $(R+R^2)$ gravity. The functional form of the adopted potential provides a well-motivated framework; its physical origin can be interpreted either as the stabilization dynamics of a radion...

💬 0 commentsarXiv:2601.09664v2PDF
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Posted in physics.bio-ph · 2026-01-14 · Carla Nathaly Villacís Núñez, Siddhartha Srivastava, Ulrich Scheven, Asheesh Bedi, Krishna Garikipati, Ellen M. Arruda

Constitutive parameter inference using physics-based data-driven modeling in full volume datasets of intact and torn rotator cuff tendons

In this work, we characterized the material properties of an animal model of the rotator cuff tendon using full volume datasets of both its intact and injured states by capturing internal strain behavior throughout the tendon. Our experimental setup, involving tension along the fiber direction, activated volumetric, tensile, and shear...

💬 0 commentsarXiv:2601.09660v1PDF
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Posted in gr-qc · 2026-01-14 · Arseny Pantsialei

A Descriptor Surrogate for Kerr Shadow Contours

We consider the Kerr black hole shadow contour as a geometric object whose essential shape can be captured by a small set of physically transparent descriptors. Starting from exact critical-curve calculations, we map each contour to a centered radial profile and retain five quantities: the mean radius, the horizontal centroid shift,...

💬 0 commentsarXiv:2601.09655v4PDF
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Posted in cond-mat.mtrl-sci · 2026-01-14 · Balram Singh, Aman Singh, Stefan Mikulik, Jakub Jurczyk, Volker Neu, Amalio Fernández-Pacheco

Geometric dependence of exchange bias in tilted three-dimensional CoFe/IrMn microwires

The exchange bias (EB) effect, arising from interfacial coupling between ferromagnetic (FM) and antiferromagnetic (AF) layers, induces a unidirectional magnetic anisotropy and underpins a wide range of spintronic functionalities. Extending the EB effect to three-dimensional (3D) architectures enables investigation of interfacial...

💬 0 commentsarXiv:2601.09653v2PDF
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Posted in quant-ph · 2026-01-14 · Timothy J. Krogmeier, Anthony W. Schlimgen, Kade Head-Marsden

A perturbative non-Markovian treatment to low-temperature spin decoherence

Molecular spins are promising candidates for quantum information science, leveraging coherent electronic spin states for quantum sensing and computation. However, the practical application of these systems is hindered by electronic spin decoherence, driven by interactions with nuclear spins in the molecule and the surrounding...

💬 0 commentsarXiv:2601.09651v2PDF
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Posted in astro-ph.CO · 2026-01-14 · Yuta Kageura, Masami Ouchi, Fumihiro Naokawa, Hiroya Umeda, Akinori Matsumoto, Yuichi Harikane, Minami Nakane, Tran Thi Thai

A New Constraint on the Optical Depth from the Reionization History Independent of CMB Large-Scale E-Mode Polarization

Recent studies report a mild discrepancy between baryon acoustic oscillation (BAO) and cosmic microwave background (CMB) measurements within the $Λ$CDM framework. This discrepancy could be explained if the optical depth $τ$ inferred from the CMB large-scale E-mode polarization is underestimated, which may be biased by...

💬 0 commentsarXiv:2601.09644v1PDF
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Posted in physics.gen-ph · 2026-01-14 · Charles Wood

Constraint-Induced Effective Mass in Massless Field Propagation

Constrained propagation of massless fields is ubiquitous in physical systems, arising from boundaries, material structure, or other restrictions on admissible modes. This paper shows that such constraints generically induce mass-like terms in the effective dispersion relation, without modifying the underlying field equations or...

💬 0 commentsarXiv:2601.09642v1PDF
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Posted in astro-ph.EP · 2026-01-14 · Y. Kilic, F. Braga-Ribas, C. L. Pereira, J. L. Ortiz, B. Sicardy, P. Santos-Sanz, O. Erece, J. L. Rizos, J. M. Gómez-Limón, G. Margoti, D. Souami, B. Morgado, A. Gomes-Junior, L. M. Catani, J. Desmars, M. Kretlow, F. Rommel, R. Duffard, A. Alvarez-Candal, J. I. B. Camargo, M. Kaplan, N. Morales, D. Herald, M. Assafin, G. Benedetti-Rossi, R. Sfair, R. Savalle, J. Arcas-Silva, L. Bernasconi, T. Blank, M. Bonavita, N. Carlson, B. Christophe, C. A. Colesanti, M. Collins, G. Columba, R. Dunford, D. W. Dunham, J. Dunham, M. Emilio, W. G. Ferrante, T. George, W. Hanna, G. Isopi, R. Jones, D. A. Kenyon, S. Kerr, V. Kouprianov, P. D. Maley, F. Mallia, J. Mattei, M. Meunier, T. Napoleao, V. F. Peixoto, J. Pollock, C. Snodgrass, A. Stechina, W. Thomas, R. Venable, G. R. Viscome, A. Zapparata, J. Bardecker, N. Castro, C. Cebral, A. Chapman, C. Gao, K. Green, A. Guimaraes, C. Jacques, E. Jehin, M. Konishi, R. Leiva, L. Liberato, C. Magliano, L. A. Mammana, M. Melita, V. Moura, Y. Olivera-Cuello, L. Peiro, J. Spagnotto, P. C. Stuart, L. Vanzi, A. Wilberger, M. Malacarne

Constraining the size, shape, and albedo of the large Trans-Neptunian Object (28978) Ixion with multi-chord stellar occultations

Trans-Neptunian objects (TNOs) are among the most primitive remnants of the early Solar System, and constraining their sizes, shapes, albedos, and surface properties is essential for understanding their origin and evolution. Stellar occultations provide highly accurate size and shape measurements for TNOs, while photometry constrains...

💬 0 commentsarXiv:2601.09639v1PDF
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Posted in physics.atom-ph · 2026-01-14 · A. Rigoulet, S. Nanos, I. K. Kominis, D. Antypas

Constraining axion-like dark matter with a radio-frequency atomic magnetometer

We report on a broadband search for axion-like-particle (ALP) interactions using a radio-frequency-operated $^{87}\mathrm{Rb}$ atomic magnetometer. The instrument provides wide spectral coverage and sensitivity to an oscillating pseudomagnetic field that may be generated by the gradient coupling of the ALP field to the constituent...

💬 0 commentsarXiv:2601.09638v3PDF
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Posted in cond-mat.mtrl-sci · 2026-01-14 · Hiroki Yoshida, Takehito Yokoyama

Light-induced Magnetization by Quantum Geometry

We propose a mechanism for the inverse Faraday and the inverse Cotton--Mouton effects arising from quantum geometry, characterized by the quantum metric quadrupole and the weighted quantum metric. Within a semiclassical framework based on the Boltzmann transport theory, we establish a general formalism describing light-induced...

💬 0 commentsarXiv:2601.09637v1PDF
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Posted in astro-ph.SR · 2026-01-14 · Ian G. Richardson, Tycho T. von Rosenvinge, O. Chris St. Cyr, David Lario, J. Grant Mitchell, Eric R. Christian

Solar Energetic Proton Events Observed by the High Energy Telescopes on the STEREO Spacecraft or at the Earth During the First Solar Orbit of STEREO A (2006 to 2023)

The twin STEREO A and B spacecraft were launched in October 2006 into heliocentric orbits at around 1 AU, advancing ahead of or lagging behind Earth, respectively, at around 22 deg./year. The spacecraft provide in-situ observations of the solar wind and energetic particle populations, as well as remote sensing observations of solar...

💬 0 commentsarXiv:2601.09630v1PDF
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Posted in physics.ins-det · 2026-01-14 · Avirup Roy, Robinjeet Singh, Joel C. Weber, W. B. Doriese, Johnathon Gard, Mark W. Keller, John A. B. Mates, Kelsey M. Morgan, Nathan J. Ortiz, Daniel S. Swetz, Daniel R. Schmidt, Joel N. Ullom, Evan P. Jahrman, Thomas C. Allison, Sasawat Jamnuch, John Vinson, Charles J. Titus, Cherno Jaye, Daniel A. Fischer, Galen C. O'Neil

Characterization of Silicon-Membrane TES Microcalorimeters for Large-Format X-ray Spectrometers with Integrated Microwave SQUID Readout

We present the electro-thermal characterization of transition-edge sensor (TES) detectors suspended on Si membranes fabricated using a silicon-on-insulator (SOI) wafer. The use of an all-silicon fabrication platform, in contrast to the more commonly used silicon nitride membranes, is compatible with monolithic fabrication of...

💬 0 commentsarXiv:2601.09629v1PDF
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Posted in physics.optics · 2026-01-14 · J. R. Silva

Spectral Distribution of Exceptional Points in Lattices with Localized Loss

We explore the existence and stability of exceptional points (EPs) in finite waveguide arrays subject to single-site dissipation. We show that the EP landscape is dictated by a geometry-dependent parity effect, leading to strictly distinct spectral behaviors for arrays with even versus odd numbers of waveguides. Through analytical...

💬 0 commentsarXiv:2601.09628v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-14 · Claire Griesbach, Tizian Scharsach, Morgan Trassin, Dennis M. Kochmann

Ferroelectric polarization mapping through pseudosymmetry-sensitive EBSD reindexing

Ferroelectric materials exhibit a switchable, spontaneous polarization at the unit cell level--an attractive property utilized in many emerging technologies including, among others, high-density memory storage, low-power transistors, and high-speed fiber optic communication. Understanding the local polarization switching behavior,...

💬 0 commentsarXiv:2601.09627v1PDF
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Posted in physics.plasm-ph · 2026-01-14 · Punit Kumar, Abhishek Kumar Singh, Priti Saxena

Plasma-Enhanced Germination in North Indian Wheat

The application of nonthermal plasma in agriculture has emerged as a sustainable and eco-friendly method to enhance seed vigor, germination, and crop productivity. This study investigates the effects of atmospheric pressure plasma treatment on five popular bread wheat varieties of North India, WH 1142, HI 1544, GW 366, GW 322, and GW...

💬 0 commentsarXiv:2601.14291v1PDF
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Posted in hep-th · 2026-01-14 · Sidan A, Tom Banks

Diamonds in the Bulk and Large-$N$ Scaling in AdS/CFT

Quantum Field Theory introduced us to the notion that a causal diamond in space-time corresponded to a subsystem of a quantum mechanical system defined on the global space-time. Work by Jacobson, Fischler and Susskind, and particularly Bousso suggested that, in the quantum theory of gravity, this subsystem should have a density matrix...

💬 0 commentsarXiv:2601.09621v4PDF
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Posted in physics.flu-dyn · 2026-01-14 · Theodore D. Drivas

Mathematical Theorems on Turbulence

In these notes, we emphasize Theorems rather than Theories concerning turbulent fluid motion. Such theorems can be viewed as constraints on the theoretical predictions and expectations of some of the greatest scientific minds of the 20th century: Lars Onsager, Andrey Kolmogorov, Lev Landau, Lewis Fry Richardson among others.

💬 0 commentsarXiv:2601.09619v2PDF
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Posted in physics.plasm-ph · 2026-01-14 · H. Frerichs, J. Van Blarcum, T. Cote, S. K. Kim, Y. Q. Liu, S. M. Yang

Comparison of plasma response models for RMP effects on the divertor and scrape-off layer in KSTAR

Resonant magnetic perturbations (RMPs) are beneficial for control of edge localized modes (ELMs) in tokamaks. Nevertheless, a side effect is the appearance of a helical striations in the particle and heat loads onto divertor targets. The extent and field line connection of these striations is significantly altered by the plasma...

💬 0 commentsarXiv:2601.09617v1PDF
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Posted in nucl-th · 2026-01-14 · Xiang-Xiang Sun, Vadim Baru, Arseniy A. Filin, Evgeny Epelbaum, Hermann Krebs, Ulf-G. Meißner, Andreas Nogga

Ab initio charge form factors and radii of light isoscalar nuclei: Role of the two-body charge density

We make \textit{ab initio} predictions of charge form factors (FFs) and radii for the isoscalar nuclei $^6$Li and $^8$Be using the Jacobi-coordinate No-Core Shell Model. The calculations employ chiral semilocal momentum-space regularized two- and three-nucleon interactions, together with consistently regularized one- and two-nucleon...

💬 0 commentsarXiv:2601.09614v1PDF
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Posted in hep-th · 2026-01-14 · Irina Ya. Aref'eva, Ali Hajilou, Kristina Rannu, Pavel Slepov

Spatial Wilson Loops and Energy Loss for Heavy Quarks in Magnetized HQCD Model

We investigate the effective potential and the string tension for the spatial Wilson loop (SWL) in hot dense QGP with two types of anisotropy, i.e. external magnetic field and spatial anisotropy, employing a holographic approach for the heavy quark model. In this approach, the string is extended in the 5th, holographic direction and...

💬 0 commentsarXiv:2601.09611v1PDF