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Physics

arXiv preprints from January 1, 2026 through September 19, 2026 — 05:32:01 EST

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Posted in cond-mat.supr-con · 2026-09-08 · Alapan Bera, Soumik Mukhopadhyay

Junction-free polarity-tunable superconducting diode effect enables XNOR logic operation

The realization of the superconducting diode effect (SDE), characterized by non-reciprocal supercurrent, is a major step towards dissipationless logic circuits. A polarity-tunable superconducting diode with high diode efficiency primarily consists of Josephson-junction architectures that couple two superconducting regions via a weak...

💬 0 commentsarXiv:2609.09097v1PDF
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Posted in quant-ph · 2026-09-08 · Tom Gur, Longcheng Li

Impossibility of One-Way One-Round Quantum 4-Coloring via Matrix-Space Stability

We show that one-way one-round quantum LOCAL algorithms cannot $4$-color directed cycles with high probability, even with unbounded local computation and quantum message length. This is the first lower bound in the high-probability quantum LOCAL setting that goes beyond the non-signaling and bounded-dependence models, exploiting the...

💬 0 commentsarXiv:2609.09091v1PDF
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Posted in gr-qc · 2026-09-08 · Vaishak Prasad

NRHJSur3dq8: a spectral numerical-relativity surrogate family for non-eccentric aligned-spin binary-black-hole waveforms

We present NRHJSur3dq8, a family of numerical-relativity (NR) surrogates for non-eccentric aligned-spin binary-black-hole waveforms inspired by an action-angle parameterization. The model provides both the dynamics: the Hamiltonian values, azimuthal action $J_φ(Φ)$, the orbital clock $τ(Φ)$ as functions of its phasing, and the...

💬 0 commentsarXiv:2609.09088v1PDF
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Posted in astro-ph.HE · 2026-09-08 · Sharon Mary Tomson, Rutger van Haasteren, Boris Goncharov

Hierarchical Inference of the Supermassive Black Hole Binary Merger Rates from Joint Searches using Pulsar Timing Arrays

Gravitational-wave searches do more than identify individual sources - they provide a way to infer the underlying astrophysical populations that produce them. Currently, Pulsar Timing Arrays (PTAs) constrain the supermassive black-hole binary (SMBHB) merger-rate density through both the stochastic gravitational-wave background (SGWB)...

💬 0 commentsarXiv:2609.09086v1PDF
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Posted in astro-ph.GA · 2026-09-07 · Yuji Urata, Kuiyun Huang

A pilot submillimeter search for IceCube neutrino counterparts: JCMT follow-up and dusty-galaxy catalog associations

The submillimeter band offers a complementary route to identifying electromagnetic counterparts of high-energy neutrinos, tracing relativistic transients and persistent dust-obscured galaxies. We present a pilot search combining JCMT/SCUBA-2 follow-up of IceCube events with catalog searches for bright high-redshift dusty systems....

💬 0 commentsarXiv:2609.07863v1PDF
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Posted in physics.flu-dyn · 2026-09-07 · Midhuna Suresh, Akanksha Gupta

Physics-informed neural networks for viscoelastic fluid flows around a cylinder in a two-dimensional channel

Grid-based fluid dynamics solvers routinely struggle with exhaustive meshing demands and ill-posed inverse problems. A practical mesh-free alternative is given by Physics-informed neural networks (PINNs) but, applying them to highly elastic Oldroyd-B fluids results in many training failures. The High Weissenberg Number Problem (HWNP),...

💬 0 commentsarXiv:2609.07861v1PDF
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Posted in quant-ph · 2026-09-07 · Travis Norsen

Snakes on a Hyper-Plane: Dynamical and Ontological Locality in Everettian Quantum Mechanics

An apparently emerging consensus holds that Everettian Quantum Mechanics (EQM), in the Spacetime State Realism (SSR) version of Wallace and Timpson, involves ontological non-locality (i.e., non-separability) but is fully compatible with the dynamical notion of locality usually taken to be required by relativity. The claim of dynamical...

💬 0 commentsarXiv:2609.07860v1PDF
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Posted in astro-ph.SR · 2026-09-07 · N. Balodhi, R. J. Morton

An Approximate Bayesian Deep Learning Approach for Uncertainty-aware Differential Emission Measure Estimates in the Solar Corona from the SDO

Accurately estimating the temperature distribution of solar coronal plasma, known as the Differential Emission Measure (DEM), is vital for understanding the thermodynamics of the corona and associated heating. However, recovering the DEM from multispectral observations like those from the Atmospheric Imaging Assembly (AIA) on board...

💬 0 commentsarXiv:2609.07858v1PDF
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Posted in gr-qc · 2026-09-07 · Ilaria Andrei, Damianos Iosifidis, Laur Järv, Margus Saal

Scalar field with nonminimal couplings to metric-affine geometry

We study a scalar field nonminimally coupled to metric-affine gravity within actions linear in the affine curvature and containing all independent parity-even and parity-odd terms quadratic in torsion and nonmetricity, including mixed contractions. We also include Nieh-Yan-like derivative couplings between the scalar-field derivative...

💬 0 commentsarXiv:2609.07856v1PDF
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Posted in physics.acc-ph · 2026-09-07 · Minghao Song, Yoshiteru Hidaka, Bernard Kosciuk, Patrick N'Gotta, Sushil Sharma, Timur Shaftan, Guimei Wang

Design and optimization of the NSLS-II lattice with complex bend replacement

The demand for brighter photon beams has driven the development of diffraction-limited storage rings with ultralow electron beam emittance. A complex bend (CB) lattice was recently proposed as an approach for the future NSLS-II upgrade. As a step toward this upgrade, NSLS-II plans to replace two existing electromagnetic dipoles with...

💬 0 commentsarXiv:2609.07854v1PDF
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Posted in astro-ph.GA · 2026-09-07 · Brian Welch, Gourav Khullar, Taylor A. Hutchison, Keren Sharon, Pedram Abedi, Matthew B. Bayliss, Michael Florian, Dylan Berry, Jacqueline Antwi-Danso, Nikko J. Cleri, Håkon Dahle, Aleena Ebey Panzer, Michael D. Gladders, Rion Oh, Cole Panzer, Jane R. Rigby, T. Emil Rivera-Thorsen

LEGGOS: Direct abundances of N, O, Ne, S, and Ar in five lensed galaxies at Cosmic Noon

We present direct $T_e$ chemical abundances in five strongly lensed galaxies at Cosmic Noon ($2.481 \leq z \leq 3.625$) using JWST/NIRSpec data from the LEGGOS survey. We measure gas-phase abundances of N, O, S, and Ar in all five galaxies, and Ne in two galaxies. Three galaxies have electron temperature constraints from multiple...

💬 0 commentsarXiv:2609.07851v1PDF
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Posted in astro-ph.GA · 2026-09-07 · Nikko J. Cleri, Taylor A. Hutchison, Brian Welch, Gourav Khullar, Matthew B. Bayliss, Håkon Dahle, Michael Florian, Michael D. Gladders, Connor Luettgenau, Rion Oh, Jane R. Rigby, T. Emil Rivera-Thorsen, Julissa Sarmiento, Keren Sharon

LEGGOS: A Shocking Lack of Evidence for Shocks at sub-kiloparsec Scales at 2 < z < 4

Here we present the first systematic search for shocks in six gravitationally lensed galaxies at 2.37 < z < 3.625 with JWST/NIRSpec integral field spectroscopy from the LEnsing and Galaxy Growth: Observing Substructures (LEGGOS) survey. We employ diagnostics that utilize the fluxes and kinematics of shock-sensitive rest-frame optical...

💬 0 commentsarXiv:2609.07850v1PDF
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Posted in gr-qc · 2026-09-07 · Yi-kun Li

Coherent Selection of Critical Kasner Response

A coherent wave component with extremely small initial self-energy can substantially change the first response of a contracting spacetime. We demonstrate this effect in Einstein--Maxwell--scalar theory with two commuting spacelike Killing fields. Along a critical family motivated by scalarized black-hole interiors, the estimated...

💬 0 commentsarXiv:2609.07848v1PDF
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Posted in hep-ph · 2026-09-07 · Oscar Garcia-Montero

Initial momentum anisotropies in the kT-factorization of the CGC I: Gradient Expansion

We revisit single-inclusive gluon production in the dilute--dilute limit of the Color Glass Condensate and show that $k_\perp$-factorization is only the zeroth order of a systematic gradient expansion in the transverse positions of the two colliding sources, organized in powers of $1/(Q_sR)$, with $Q_s$ the saturation scale and $R$...

💬 0 commentsarXiv:2609.07847v1PDF
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Posted in hep-th · 2026-09-07 · Arjun Bagchi, Sachin Grover, Sharang Rajesh Iyer, Amartya Saha, Stephan Stieberger

Double Copy from the Flipped Null String

We study the double-copy structure of tree amplitudes of the bosonic null string in the flipped vacuum. We show that its level-one vector correlator supplies the Cachazo-He-Yuan (CHY) kinematic half-integrand of the higher-derivative $(DF)^2$ gauge theory, while distinguished compact momentum-winding sectors generate the complementary...

💬 0 commentsarXiv:2609.07846v1PDF
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Posted in hep-th · 2026-09-07 · Arjun Bagchi, Sachin Grover, Sharang Rajesh Iyer, Amartya Saha, Stephan Stieberger

Scattering of Null strings - Flipped Vacuum & CHY

We investigate the scattering of null tensionless strings. Classical null strings, given by the ILST action, give rise to three distinct quantum theories built on different vacua and representations of the underlying 2d Conformal Carroll algebra (CCA) which form the residual gauge symmetries on the null worldsheet. In this paper, we...

💬 0 commentsarXiv:2609.07845v1PDF
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Posted in nucl-th · 2026-09-07 · Federico Nola, Fernando Arias-Aragón

An EOS-Driven Extension of NSCool for Compact Star Cooling with Hadronic and Quark Degrees of Freedom

We present an EOS-driven extension of the NSCool thermal evolution code that enables complete tabulated equations of state to be treated within a single composition-based input structure. The generalized NEW interface includes additional baryonic fractions, a bosonic composition variable, the hadronic volume fraction, and quark...

💬 0 commentsarXiv:2609.07844v1PDF
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Posted in cond-mat.soft · 2026-09-07 · Vladimir Dmitriev, Ankit Gupta, Anton Goloborodko

Valency-bounding correction potential for coarse-grained molecular dynamics simulations

Many systems in soft and living matter bind through a limited number of bonds per particle: proteins associate via discrete surface patches, nucleic acids form one-to-one contacts, and the phase behaviour of multivalent biomolecules is governed by the number of binding sites they carry. In simulations, valency limits are typically...

💬 0 commentsarXiv:2609.07842v1PDF
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Posted in hep-th · 2026-09-07 · Kaushik Kangsabanik, Apratim Kaviraj, Astha Tiwari

Truncated Polyakov bootstrap for BCFTs: Neumann-Dirichlet flow and Ising special transition

We extend the recently proposed truncated Polyakov bootstrap to boundary conformal field theories (BCFTs). The formalism uses the analytic functional framework to find approximate solutions of BCFT crossing. We show that a generic nonperturbative solution can be identified by relating it to a family of deformations around generalized...

💬 0 commentsarXiv:2609.07841v1PDF
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Posted in nucl-th · 2026-09-06 · Sudhir Pandurang Rode

Microscopic study of baryon stopping in low-energy heavy-ion collisions within UrQMD model

In low-energy heavy-ion collisions, baryon stopping is an important process, in which protons from the initial colliding nuclei are stopped at mid-rapidity region. Quantifying such stopping can reveal information on the properties of the nuclear medium, such as net-baryon density. Though experimental measurement of net-proton rapidity...

💬 0 commentsarXiv:2609.06502v1PDF
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Posted in astro-ph.IM · 2026-09-06 · Minhyeok Kim, Hyun Jung Kim, Sang H. Choi, Ashley Daeun Jung

Mechanisms of Electrostatic Charge Formation and Retention in Lunar Regolith

As the Artemis program advances toward the lunar south pole and permanently shadowed regions (PSRs), understanding lunar charging is increasingly important for protecting astronauts, robotic systems, instruments, and infrastructure. Persistent darkness, cryogenic temperatures, low regolith conductivity, and long charge-relaxation...

💬 0 commentsarXiv:2609.06496v1PDF
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Posted in hep-ph · 2026-09-06 · Hiroshi Okada, Labh Singh

Radiative double inverse seesaw and dark matter in an alternative gauged $U(1)_{B-L}$ model

We propose a concrete theoretical framework for the double inverse seesaw mechanism within an alternative gauged $U(1)_{B-L}$ model, where the tiny neutrino masses emerge radiatively at the loop level in accordance with the 't Hooft naturalness criterion. By assigning non-universal $B-L$ charges of $(-4, -4, 5)$ to the right-handed...

💬 0 commentsarXiv:2609.06494v1PDF
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Posted in astro-ph.GA · 2026-09-06 · Shihong Liu, Yu Rong

A Direct DESI--SDSS Two-Fibre Test of Aperture Bias in Optical Emission-Line Diagnostics

Fixed angular apertures sample different physical regions of nearby galaxies and can therefore bias optical emission-line diagnostics. We use 20,545 high-confidence emission-line galaxies observed by both the Dark Energy Spectroscopic Instrument (DESI) and the Sloan Digital Sky Survey (SDSS) as a two-fibre experiment, in which the...

💬 0 commentsarXiv:2609.06493v1PDF
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Posted in cond-mat.quant-gas · 2026-09-06 · Xingchuan Zhu, Qingyang Guo, Junsong Sun, Yujun Fu, Xingmin Huo, Yixuan Huang, Shiping Feng, Richard T. Scalettar, Huaiming Guo

Dynamical signatures of Hardcore-Boson Supersolid on the Triangular Lattice

We investigate the dynamical signatures of the supersolid phase in the triangular-lattice hardcore Bose-Hubbard model via large-scale quantum Monte Carlo simulations and linear spin-wave theory. We reveal a distinct momentum-space separation in the spectral weights. The transverse spectrum shows gapless Goldstone modes at the $Γ$ and...

💬 0 commentsarXiv:2609.06487v1PDF
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Posted in hep-lat · 2026-09-06 · Ariel Kelman, Itay Gomelski, Jonathan Elyovich, Erez Zohar, Patrick Emonts

ggpeps: A package for Gauged Gaussian PEPS

Lattice gauge theories are a low-energy regularization of quantum field theories. They are the basis for the development of numerical algorithms that provide insight into the non-perturbative regime of quantum field theories which is difficult to achieve through other methods. We present a python package, ggpeps, implementing gauged...

💬 0 commentsarXiv:2609.06486v1PDF