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arXiv preprints from January 1, 2026 through July 28, 2026 — 15:11:38 EST

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Posted in cond-mat.dis-nn · 2026-01-14 · Soumadip Pakrashi, Atanu Rajak, Sambuddha Sanyal

Emergent Nonperturbative Universal Floquet Localization

We show that a robust, nonperturbative localization plateau emerges in periodically driven quasiperiodic lattices, independent of the static localization properties and drive protocol. Using exact Floquet dynamics, Floquet perturbation theory, and optimal-order van Vleck analysis, we identify a fine-tuned amplitude-to-frequency ratio...

💬 0 commentsarXiv:2601.09793v1PDF
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Posted in quant-ph · 2026-01-14 · Ricard Puig, Nathan Constantinides, Bharath Hebbe Madhusudhana, Daniel Bowring, C. Huerta Alderete, Andrew T. Sornborger

Background cancellation for frequency-selective quantum sensing

A key challenge in quantum sensing is the detection of weak time dependent signals, particularly those that arise as specific frequency perturbations over a background field. Conventional methods usually demand complex dynamical control of the quantum sensor and heavy classical post-processing. We propose a quantum sensor that...

💬 0 commentsarXiv:2601.09792v1PDF
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Posted in hep-ph · 2026-01-14 · Ivan Esteban, M. C. Gonzalez-Garcia, Michele Maltoni, Ivan Martinez-Soler, Joao Paulo Pinheiro, Thomas Schwetz

Lessons from the first JUNO results

First results from the JUNO reactor neutrino experiment already determine with world-leading precision the small neutrino squared-mass splitting $Δm^2_{21}$ and the mixing angle $θ_{12}$. In this article we perform an exploratory study beyond these, taking advantage of the first JUNO data release to discuss its sensitivity to the...

💬 0 commentsarXiv:2601.09791v2PDF
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Posted in hep-ph · 2026-01-14 · Gonzalo Herrera, Shunsaku Horiuchi, Xiaolin Qi, Ian M. Shoemaker

The Cosmic Neutrino Background is within Reach of Future Neutrino Telescopes

The cosmic neutrino background (C$ν$B) can be boosted to high energies due to scatterings with energetic cosmic rays (CRs) across cosmological scales. Previous calculations focused on neutral current incoherent and coherent elastic scatterings of cosmic-ray protons off relic neutrinos. However, charged current interactions and deep...

💬 0 commentsarXiv:2601.09790v2PDF
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Posted in astro-ph.GA · 2026-01-14 · F. R. Ditrani, M. Fossati, M. Longhetti, F. La Barbera, A. Iovino, C. Maraston, D. Thomas, D. Bevacqua

Growing in number, passive in nature: tracing the evolution of the most massive quiescent galaxies since z ~ 0.8 with BOSS and DESI

Luminous Red Galaxies (LRGs) are among the most massive galaxies at any epoch, and lack ongoing star formation. As systems hosting most of the baryonic mass in the local Universe, they preserve imprints of the quenching mechanisms in the early Universe. We exploited the large BOSS and DESI spectroscopic datasets to perform the first...

💬 0 commentsarXiv:2601.09789v1PDF
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Posted in astro-ph.HE · 2026-01-14 · Giulia Brunelli, Kaya Mori, Jaegeun Park, Jordan Eagle, Moaz Abdelmaguid, Melania Nynka, Hongjun An, Aya Bamba, Joseph D. Gelfand, Gabriele Ponti, Samar Safi-Harb, Vito Sguera, Cristian Vignali, Jooyun Woo, Roberta Zanin

New Hard X-Ray and Multiwavelength Study of the PeVatron Candidate PWN G0.9+0.1 in the Galactic Center Region

We present a new X-ray study and multiwavelength spectral energy distribution (SED) modeling of the young pulsar wind nebula (PWN) powered by the energetic pulsar PSR J1747-2809, inside the composite supernova remnant (SNR) G0.9+0.1, located in the Galactic Center region. The source is detected by NuSTAR up to 30 keV with evidence for...

💬 0 commentsarXiv:2601.09788v1PDF
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Posted in hep-th · 2026-01-14 · Carlos Hoyos, David Mateos, Wilke van der Schee, Javier G. Subils

Microscopic Description of Critical Bubbles

First-order phase transitions occur through the nucleation of critical bubbles of the stable phase within the metastable phase. Using holography, we present a fully microscopic description of these bubbles in a strongly coupled, four-dimensional gauge theory at finite temperature. In the gravitational dual, these bubbles correspond to...

💬 0 commentsarXiv:2601.09787v2PDF
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Posted in hep-th · 2026-01-14 · Yoav Zigdon

Superball of Strings

I solve the equations of the low-energy limit of string theory to obtain a solution corresponding to a microcanonical ensemble of highly-excited superstrings. This ``Superball of Strings'' is a static, spherically symmetric ``fuzzball'' of BPS strings with a size set by a random walk scaling. The solution can be embedded in string...

💬 0 commentsarXiv:2601.09785v2PDF
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Posted in quant-ph · 2026-01-14 · Marco Dalai, Filippo Girardi, Ludovico Lami

Zero-Error List Decoding for Classical-Quantum Channels

The aim of this work is to study the zero-error capacity of pure-state classical-quantum channels in the setting of list decoding. We provide an achievability bound for list-size two and a converse bound holding for every fixed list size. The two bounds coincide for channels whose pairwise absolute state overlaps form a positive...

💬 0 commentsarXiv:2601.09786v2PDF
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Posted in cond-mat.supr-con · 2026-01-14 · Igor de M. Froldi, Hermann Freire

Highly efficient superconducting diode effect in unconventional $p$-wave magnets

We investigate the emergence of superconducting phases, both with zero and finite Cooper-pair center of mass momenta, in recently proposed unconventional $p$-wave magnets. As a consequence, we find that, while these magnetic phases are in principle compatible with a conventional pairing state at zero field, a Fulde-Ferrell phase can...

💬 0 commentsarXiv:2601.09783v1PDF
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Posted in hep-ph · 2026-01-14 · Kim V. Berghaus, Adrien Florio, M. Laine, Franz R. Sattler

Classical equipartition dynamics between axions and non-Abelian gauge fields

Motivated by axion-like inflation and its warm embedding within the Standard Model, we study the early stages of the energy transfer between an axion condensate and an SU(2) gauge ensemble, by employing non-linear classical real-time lattice simulations. The discretized equations of motion are worked out, elaborating on Gauss...

💬 0 commentsarXiv:2601.09784v2PDF
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Posted in quant-ph · 2026-01-14 · Jan Carlo Schumann, Igor Lesanovsky, Parvinder Solanki

Hierarchical time crystals

Spontaneous symmetry breaking is one of the central organizing principles in physics. Time crystals have emerged as an exotic phase of matter, spontaneously breaking the time translational symmetry, and are mainly categorized as discrete or continuous. While these distinct types of time crystals have been extensively explored as...

💬 0 commentsarXiv:2601.09779v1PDF
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Posted in cond-mat.supr-con · 2026-01-14 · Kazi Ranjibul Islam, Samuel Awelewa, Andrey V. Chubukov, Maxim Dzero

Spatially resolved collective modes in d-wave superconductors

We analyze the dispersion of collective modes in a superconductor with $d-$wave symmetry of the order parameter in the presence of long-range Coulomb interaction. We use diagrammatic technique and quasiclassical theory in Keldysh-Nambu formalism to compute longitudinal and transverse pair susceptibilities and extract from them the...

💬 0 commentsarXiv:2601.09782v1PDF
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Posted in astro-ph.GA · 2026-01-14 · T. J. L. C. Bakx, Hiddo S. B. Algera, Prachi Prajapati, George Bendo, Stefano Berta, Laura Bonavera, Pierre Cox, Joaquin González-Nuevo, Masato Hagimoto, Kevin Harrington, Matthew Lehnert, Stephen Serjeant, Pasquale Temi, Paul van der Werf, Chentao Yang, Gianfranco De Zotti

Breathless BEARS: [O$_{\rm \,III}$] 88$μ$m Emission of Dusty Star-Forming Galaxies at $z = 3-4$

We present [O$_{\rm \,III}$] 88$μ$m observations towards four ${\it Herschel}$-selected dusty star-forming galaxies (DSFGs; log$_{10}$ $μ$L$_{\rm IR}$/L$_{\odot}$ = 13.5 - 14 at $z = 2.9 - 4$) using the Atacama Compact Array (ACA) in Bands 9 and 10. We detect [O$_{\rm \,III}$] emission in all four targets at >3$σ$, finding line...

💬 0 commentsarXiv:2601.09780v1PDF
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Posted in hep-th · 2026-01-14 · Charlie Cummings, Jonathan J. Heckman

The Topological Equivalence Principle: On Decoupling TFTs from Gravity

Topological field theories (TFTs) play an important role in characterizing the deep infrared (IR) of many quantum systems with a mass gap, as well as the global symmetries of quantum field theories (QFTs) decoupled from gravity. In gravitational asymptotically AdS spacetimes, TFT sectors which are putatively decoupled from local...

💬 0 commentsarXiv:2601.09781v1PDF
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Posted in astro-ph.GA · 2026-01-14 · Raphael E. Hviding, Anna de Graaff, Hanpu Liu, Andy D. Goulding, Yilun Ma, Jenny E. Greene, Leindert A. Boogaard, Andrew J. Bunker, Nikko J. Cleri, Marijn Franx, Michaela Hirschmann, Joel Leja, Rohan P. Naidu, Jorryt Matthee, David J. Setton, Hannah Übler, Giacomo Venturi, Bingjie Wang

The X-Ray Dot: Exotic Dust or a Late-Stage Little Red Dot?

JWST's "Little Red Dots" (LRDs) are increasingly interpreted as active galactic nuclei (AGN) obscured by dense thermalized gas rather than dust as evidenced by their X-ray weakness, blackbody-like continua, and Balmer line profiles. A key question is how LRDs connect to standard UV-luminous AGN and whether transitional phases exist...

💬 0 commentsarXiv:2601.09778v1PDF
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Posted in cs.CV · 2026-01-14 · Chi-Pin Huang, Yunze Man, Zhiding Yu, Min-Hung Chen, Jan Kautz, Yu-Chiang Frank Wang, Fu-En Yang

Fast-ThinkAct: Efficient Vision-Language-Action Reasoning via Verbalizable Latent Planning

Vision-Language-Action (VLA) tasks require reasoning over complex visual scenes and executing adaptive actions in dynamic environments. While recent studies on reasoning VLAs show that explicit chain-of-thought (CoT) can improve generalization, they suffer from high inference latency due to lengthy reasoning traces. We propose...

💬 0 commentsarXiv:2601.09708v2PDF
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Posted in hep-th · 2026-01-14 · Marco Maria Baccianti, Lorenz Eberhardt, Sebastian Mizera

Precision asymptotics of string amplitudes

Recent work revealed a tension between the Gross-Mende analysis of the high-energy fixed-angle behavior of string amplitudes and the explicit numerical data. Motivated by this puzzle, we revisit the problem of classifying saddle-point geometries for the one-loop amplitude. We find an infinite family of complex saddles that dominate...

💬 0 commentsarXiv:2601.09707v2PDF
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Posted in cs.CL · 2026-01-14 · Andreea Dutulescu, Stefan Ruseti, Mihai Dascalu

Value-Aware Numerical Representations for Transformer Language Models

Transformer-based language models often achieve strong results on mathematical reasoning benchmarks while remaining fragile on basic numerical understanding and arithmetic operations. A central limitation is that numbers are processed as symbolic tokens whose embeddings do not explicitly encode numerical value, leading to systematic...

💬 0 commentsarXiv:2601.09706v1PDF
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Posted in cond-mat.str-el · 2026-01-14 · Liam A. V. Nagle-Cocco, Andrew L. Goodwin, Clare P. Grey, Siân E. Dutton

Revisiting Jahn--Teller Transitions in Correlated Oxides with Monte Carlo Modeling

Jahn--Teller (JT) distortions are a key driver of physical properties in many correlated oxide materials. Cooperative JT distortions, in which long-range orbital order reduces the symmetry of the average structure macroscopically, are common in JT-distorted materials at low temperatures. This long-range order will often melt on...

💬 0 commentsarXiv:2601.09705v4PDF
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Posted in cs.SE · 2026-01-14 · Sicong Liu, Yanxian Huang, Mingwei Liu, Jiachi Chen, Ensheng Shi, Yuchi Ma, Hongyu Zhang, Yin Zhang, Yanlin Wang

ShortCoder: Knowledge-Augmented Syntax Optimization for Token-Efficient Code Generation

Code generation tasks aim to automate the conversion of user requirements into executable code, significantly reducing manual development efforts and enhancing software productivity. The emergence of large language models (LLMs) has significantly advanced code generation, though their efficiency is still impacted by certain inherent...

💬 0 commentsarXiv:2601.09703v1PDF
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Posted in cs.CC · 2026-01-14 · Baruch Garcia

Diagonalization Without Relativization A Closer Look at the Baker-Gill-Solovay Theorem

We already know that several problems like the inequivalence of P and EXP as well as the undecidability of the acceptance problem and halting problem relativize. However, relativization is a limited tool which cannot separate other complexity classes. What has not been proven explicitly is whether the Turing-recognizability of the...

💬 0 commentsarXiv:2601.09702v1PDF
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Posted in eess.SP · 2026-01-14 · Fahimeh Orvati Nia, Shima Salehi, Joshua Peeples

Evaluating GAN-LSTM for Smart Meter Anomaly Detection in Power Systems

Advanced metering infrastructure (AMI) provides high-resolution electricity consumption data that can enhance monitoring, diagnosis, and decision making in modern power distribution systems. Detecting anomalies in these time-series measurements is challenging due to nonlinear, nonstationary, and multi-scale temporal behavior across...

💬 0 commentsarXiv:2601.09701v1PDF
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Posted in q-bio.NC · 2026-01-14 · Oliver Zahn, Matt Beton, Simran Chana

Attention Is Not Retention: The Orthogonality Constraint in Infinite-Context Architectures

Biological memory solves a problem that eludes current AI: storing specific episodic facts without corrupting general semantic knowledge. Complementary Learning Systems theory explains this through two subsystems - a fast hippocampal system using sparse, pattern-separated representations for episodes, and a slow neocortical system...

💬 0 commentsarXiv:2601.15313v2PDF