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Physics

arXiv preprints from January 1, 2026 through September 6, 2026 — 03:20:07 EST

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Posted in physics.optics · 2026-07-17 · Josué R. León-Torres, Byron Caiza, Nadia Baumann, Sebastian Töpfer, Anna Mühlig, Orlando Guntinas-Lichius, Karin Burger, Frank Setzpfandt, Markus Gräfe, Valerio Flavio Gili

Quantum scanning synthetic optical holography

Synthetic optical holography (SOH) introduced holographic reconstruction into scanning optical microscopy, enabling quantitative phase imaging with sequential acquisition and point detection. Here, we extend this concept to the quantum regime by implementing SOH within quantum imaging with undetected light (QIUL). By integrating a...

💬 0 commentsarXiv:2607.16176v1PDF
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Posted in nucl-ex · 2026-07-17 · G. L. Zimba, H. Iwasaki, B. A. Brown, Y. Utsuno, N. Shimizu, N. Aoi, M. Basson, T. Beck, J. Chen, J. Chung-Jung, A. Douglas, A. Ertoprak, P. Farris, C. Fransen, A. Gade, S. A. Gillespie, A. Hill, K. Kolos, D. Lempke, I. Lihtar, T. Mijatović, S. Neupane, S. Noji, T. Parry, A. Revel, R. Salinas, A. Sanchez, E. Schieb, D. Weisshaar, Y. Yamamoto

Rapid structural evolution of neutron-rich silicon isotopes toward N = 28

Neutron-rich Si isotopes represent a unique case of shell evolution, exhibiting a robust shell closure at $N=20$ and pronounced quadrupole collectivity at $N = 28$. We report lifetime measurements of excited states in $^{40}$Si and the first simultaneous lifetime and heavy-ion inelastic-scattering measurements in $^{41}$Si. In...

💬 0 commentsarXiv:2607.16174v1PDF
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Posted in astro-ph.GA · 2026-07-17 · Joy Bhattacharyya, Guinevere Herron, Yasmeen Asali, Abby Mintz, Mithi A. C. de los Reyes, Yao-Yuan Mao, Annika H. G. Peter

Morphologies of SAGAbg low-mass galaxies in Legacy Survey multi-band imaging: dependence on stellar masses, star-formation rates and low-redshift evolution

The optical morphologies of low-mass galaxies can be used to directly trace their assembly and constrain models of galaxy evolution. We select a sample of 6211 low-mass ($7\lesssim {\rm log}(M_{\ast}/M_{\odot})\lesssim 10$) star-forming galaxies from the SAGAbg catalog that has high-completeness at low-redshifts ($z<0.1$). We obtain...

💬 0 commentsarXiv:2607.16170v1PDF
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Posted in nucl-th · 2026-07-14 · Z. Y. Dong, Z. X. Ren, Q. Zhao, Z. M. Niu

Octupole deformation in even-even Ra isotopes from covariant density functional theory with localized exchange terms in a three-dimensional lattice space

The covariant density functional theory in a three-dimensional lattice space is extended to the PCF-PK1 functional with localized exchange terms and is employed to study the nuclear shape evolution of even-even Ra isotopes. Well-developed axial octupole deformations are found for the ground states of $^{222-228}$Ra with no evidence of...

💬 1 commentsarXiv:2607.12633v1PDF
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Posted in astro-ph.CO · 2026-07-14 · Nils Schöneberg, Vivian Poulin, Angelo G. Ferrari, Fabio Finelli, Julien Lesgourgues, Luca Morelli, Markus R. Mosbech, Ravi Kumar Sharma, Théo Simon

The $H_0$ World Cup. I. Summary of the baseline group stage results

The Hubble tension has reached a nominal significance above $7σ$, while new high-precision measurements of the cosmic microwave background (CMB) and baryon acoustic oscillations (BAO) sharpen the test of proposed solutions. Using a common framework, we compare fourteen representative alternatives to the standard $Λ$ Cold Dark Matter...

💬 1 commentsarXiv:2607.13282v1PDF
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Posted in quant-ph · 2026-07-13 · Junrui Zhang, Zemin Chen, Chunsheng Xin, Hongyi Wu, Rui Ning

HarmQ: Harmonic Backdoor Attacks Against Quantum Neural Networks

Quantum Neural Networks (QNNs) have emerged as a promising paradigm for quantum machine learning in the Noisy Intermediate-Scale Quantum (NISQ) era, leveraging quantum phenomena such as superposition and entanglement to process information in exponentially large Hilbert spaces. However, QNNs inherit critical security vulnerabilities...

💬 1 commentsarXiv:2607.12055v1PDF
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Posted in hep-ph · 2026-07-16 · Anish Ghoshal, Pratyay Pal, Alessandro Strumia

Particle production from bubble collisions

Collisions of ultra-relativistic bubbles during cosmological phase transitions can produce particles much heavier than the transition scale. Previous analyses modelled this process as the off-shell decay of the scalar background. We show that its results parametrically overestimate hard particle production and depend on the gauge...

💬 7 commentsarXiv:2607.15279v1PDF
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Posted in quant-ph · 2026-07-16 · Saptarshi Mandal, Alan Sherry, Sthitadhi Roy

Locality of deep thermalisation through the lens of entanglement teleportation

Deep thermalisation characterises the emergence of universal quantum state ensembles on subsystems due to projective measurements on their complement. We study the notion of locality, or lack thereof, in this phenomenon by considering a subsystem partitioned into two disjoint subregions which remain causally disconnected at all times...

💬 1 commentsarXiv:2607.15276v1PDF
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Posted in cond-mat.str-el · 2026-07-16 · Zhaoyu Han, Ashvin Vishwanath, Eslam Khalaf

Single-component twisted $\mathbb{Z}_3$ orthogonal metal in an $e/3$-anyon fluid

We propose an unconventional metallic phase emerging on doping the $1/3$ Fractional Chern insulator, which can serve as a parent state to anyon superconductivity with arbitrary chiral central charge. It is a twisted $\mathbb{Z}_3$ orthogonal metal: a state with vanishing electron quasiparticle weight but a single well-defined Fermi...

💬 0 commentsarXiv:2607.15274v1PDF
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Posted in cond-mat.soft · 2026-07-16 · Hosung Kwak, Yongjoo Baek, Hawoong Jeong

Tunable Mpemba effect in a polymer-bead system with inertia

We propose an experimentally motivated model in which the Mpemba effect can be controlled through the system's inertia. The model describes a polymer undergoing a denaturation transition whose force-extension curve contains a plateau that slows relaxation. When the system is initially prepared at a higher temperature or under a weaker...

💬 0 commentsarXiv:2607.15266v1PDF
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Posted in quant-ph · 2026-07-16 · Rui Wang, Marcus J. Clark, Obada Alia, Sima Bahrani, Djeylan Aktas, Matej Peranić, Mario Stipčević, Martin Lončarić, John Rarity, Siddarth K. Joshi, Dimitra Simeonidou

Dynamic Entanglement Distribution for Multi-User and Multi-Protocol Quantum Networking

Dynamic entanglement distribution is a key requirement for scalable, multi-user and multi-protocol quantum networks. We demonstrate a metropolitan-scale entanglement-based quantum communication network enabled by a quantum reconfigurable optical add-drop multiplexer (q-ROADM), which dynamically distributes polarisation-entangled...

💬 0 commentsarXiv:2607.15262v1PDF
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Posted in hep-th · 2026-07-16 · Alessandro Moia, Stefano Stocchetti, Giovanni Amelino-Camelia

Relativistic time-commutative dynamics with $κ$-plane noncommutativity

In the last decades, spacetime noncommutativity and the associated deformations of relativistic symmetries have attracted a lot of interest, as several phenomenological windows into quantum gravity are approaching genuine Planck-scale sensitivity. However, the physical significance of the mathematical structures introduced to deal...

💬 0 commentsarXiv:2607.15261v1PDF
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Posted in cond-mat.mes-hall · 2026-07-16 · Federico Garcia-Gaitan, Branislav K. Nikolic

Long-range and steady-state entanglement of driven-dissipative nitrogen vacancy centers using microwaves as a drive and synthetic antiferromagnet as a dissipator

The search for optimal schemes and dissipative environments for mediating long-range entanglement between two distant nitrogen-vacancy centers (NVCs) in diamond is the subject of ongoing vigorous efforts due to potential applications of such microscopic solid-state qubits in quantum sensing and quantum computing. However, stabilizing...

💬 0 commentsarXiv:2607.15259v1PDF
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Posted in quant-ph · 2026-07-07 · Jian Xu, Delu Zeng, John Paisley, Qibin Zhao

Entanglement as a Structural Complexity Axis: A PAC-Bayesian View of Generalization in Quantum Policies and Value Functions

Parameterized quantum circuits (PQCs) are increasingly used as policies and value functions in quantum reinforcement learning, yet it remains unclear when and why quantum policies generalize. We give a PAC-Bayesian account in which generalization is governed not by the raw number of circuit parameters, but by the effective dimension...

💬 2 commentsarXiv:2607.06230v1PDF
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Posted in quant-ph · 2026-07-15 · Bjorn K. Berntson, David Jennings, Matteo Lostaglio, Scott Parker

An end-to-end quantum algorithm for weakly nonlinear plasma physics with superquadratic speedup

Nonlinear kinetic plasma simulation is high-dimensional and classically demanding, while quantum algorithms face different bottlenecks: embedding nonlinear dynamics into a linear computation, loading dense field-interaction data, and efficiently extracting information. We present an end-to-end quantum algorithm, with rigorous...

💬 1 commentsarXiv:2607.14308v1PDF
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Posted in cond-mat.stat-mech · 2026-07-16 · Klaus M. Frahm, Dima L. Shepelyansky

Thermodynamic theory of voting and EU elections

We introduce a thermodynamic theory of voting and show that it provides a good description of distribution of party votes in EU elections. The theory traces parallels between system energies of coupled nonlinear oscillators and party vote fractions. Such a classical system evolution is characterized by the conservation of total energy...

💬 0 commentsarXiv:2607.15119v1PDF
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Posted in quant-ph · 2026-07-16 · Dongwoo Kim, Zhenyu Cui, Daniel K. Park, Chihoon Lee

Structure-Aware Variational State Preparation for Quantum Basket Option Pricing

Basket option pricing often relies on Monte Carlo estimation, for which quantum amplitude estimation (QAE) provides a quadratic speed-up. However, the practical benefit of QAE can be limited by the depth of the state-preparation circuit. We propose a structure-aware quantum state-preparation framework for QAE-based basket option...

💬 0 commentsarXiv:2607.14518v1PDF
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Posted in quant-ph · 2026-07-14 · Guillem Borràs Espert, Francisco Gómez Casanova, Luis de Pedro Sánchez, Senaida Hernández Santana, Pablo Serrano Molinero

A Noise-Aware Quantum Algorithm for Credit Valuation Adjustments on Real Quantum Hardware

Credit Valuation Adjustment (CVA) requires repeated risk-neutral expectation estimation, making it a natural test bed for quantum amplitude estimation, whose coherent amplification can in principle reduce Monte Carlo sampling cost. Whether this advantage survives realistic financial encoding and noisy hardware remains open. We develop...

💬 0 commentsarXiv:2607.12990v1PDF
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Posted in physics.geo-ph · 2026-01-21 · Chaohua Liang, Jun Matsushima

SeisBind: Physics-Aware Tri-Modal Representation Binding for Seismic Data via Contrastive Learning

This letter proposes a physics-aware multi-modal contrastive learning framework designed to transform complex seismic wavefields into human-readable physical representations. Traditional data-driven inversion methods often focus on pixel-wise mapping, which lacks physical grounding and interpretability. To address this, we introduce a...

💬 0 commentsarXiv:2601.14607v1PDF
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Posted in nucl-th · 2026-01-21 · P. Y. Wang, M. R. Xie, Q. Yuan, W. J. Huang, J. G. Li

\textit{Ab initio} study of spectroscopic factors in $^{48}$K and neighboring $N=28$ isotones

A recent \(^{47}\text{K}(d,pγ)^{48}\text{K}\) transfer reaction measurement has identified new excited states in \(^{48}\text{K}\) and extracted the corresponding spectroscopic factors (SFs)[\href{https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.162504}{C. J. Paxman, \textit{et al.} PhysRevLett.134.162504 (2025)}], but...

💬 0 commentsarXiv:2601.14604v1PDF
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Posted in nucl-th · 2026-01-21 · M. R. Xie, J. G. Li, C. A. Bertulani, N. Michel, Y. Z. Sun, W. Zuo

How Threshold Effects in Spectroscopic Factors Influence Heavy-Ion Knockout Reactions

A two-decade-old puzzle in heavy-ion one-nucleon knockout reactions is the strong correlation between the reduction factor $R_s=σ_{\rm exp}/σ_{\rm th}$ and the Fermi surface asymmetry $ΔS$. Theoretical cross sections typically rely on spectroscopic factors (SFs) from shell model (SM) calculations, which neglect continuum coupling...

💬 0 commentsarXiv:2601.14596v1PDF
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Posted in astro-ph.CO · 2026-01-21 · Nick Seymour, Catherine Hale, Imogen Whittam, Pascal Oesch, Alba Covelo-Paz, Stijn Wuyts, Jose Afonso, Rebecca Bowler, Joe A. Grundy, Ravi Jaiswar, Matt Jarvis, Allison Matthews, Romain A. Meyer, Chloe Neufeld, Naveen A. Reddy, Irene Shivaei, Dan Smith, Rohan Varadaraj, Michael A. Wozniak, Lyla Jung

A JWST Paschen-alpha Calibration of the Radio Luminosity-Star Formation Rate Relation at z~1.3

As radio emission from normal galaxies is a dust-free tracer of star formation, tracing the star formation history of the Universe is a key goal of the SKA and ngVLA. In order to investigate how well radio luminosity traces star formation rate (SFR) in the early Universe, we have examined the radio properties of a JWST Paschen-alpha...

💬 0 commentsarXiv:2601.14588v1PDF
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Posted in physics.acc-ph · 2026-01-21 · Walter H. Hartung, Wei Chang, Sang-Hoon Kim, Taro Konomi, Ting Xu

Two-port CW measurements on RF cavities: Notes on self-consistency assessment and indirect methods

In the case of a radio-frequency (RF) cavity with a mismatched input coupler, a direct calculation of the power dissipation in the cavity and the intrinsic quality factor from continuous-wave (CW) measurements may have uncertainty due to systematic errors. Formulae for an indirect calculation of these quantities are derived for the...

💬 0 commentsarXiv:2601.14583v1PDF
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Posted in hep-ph · 2026-01-21 · N. Okada, A. Stern

Symmetry Nonrestoration in the Pati-Salam Model

We demonstrate that symmetry need not be restored in the Pati-Salam model, so that $SU(2)_L\otimes SU(2)_R\otimes SU(4)_c$ remains broken to the Standard Model group at temperatures above the Pati-Salam symmetry breaking scale. Including the leading finite-temperature corrections, suitable quartic couplings prevent a restoration...

💬 0 commentsarXiv:2601.14580v1PDF
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Posted in physics.bio-ph · 2026-01-21 · Robert F. Melendy, Daniel H. Blue

The Lie Group Basis of Neuronal Membrane Architecture: Why the Hodgkin-Huxley Equations Take Their Form

The Hodgkin-Huxley equations have described neuronal excitability for seventy years, yet their mathematical structure-gating exponents m3h and n4, exponential voltage dependencies, and bounded activation variables, has remained empirically justified rather than theoretically derived. Hodgkin and Huxley introduced voltage-dependent...

💬 0 commentsarXiv:2601.14579v1PDF