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arXiv preprints from January 1, 2026 through September 23, 2026 — 10:19:12 EST

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Posted in cond-mat.mtrl-sci · 2026-01-09 · Dong-Jun Kim, Beom Jin Kim, Hee-Chang Shin, Jeongkeun Kim, Yuchen Pu, Shuhan Yang, Xinhou Chen, Byong-Guk Park, Jong-Hyun Ahn, Hyunsoo Yang

Bio-resorbable magnetic tunnel junctions

Magnetic tunnel junctions (MTJs) play a crucial role in spintronic applications, particularly data storage and sensors. Especially as a non-volatile memory, MTJs have received substantial attention due to its CMOS compatibility, low power consumption, fast switching speed, and high endurance. In parallel, bio-resorbable electronics...

💬 0 commentsarXiv:2601.05733v1PDF
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Posted in cs.LG · 2026-01-09 · Yongyi Yang, Jianyang Gao

mHC-lite: You Don't Need 20 Sinkhorn-Knopp Iterations

Hyper-Connections (HC) generalizes residual connections by introducing dynamic residual matrices that mix information across multiple residual streams, accelerating convergence in deep neural networks. However, unconstrained residual matrices can compromise training stability. To address this, DeepSeek's Manifold-Constrained...

💬 0 commentsarXiv:2601.05732v1PDF
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Posted in math.FA · 2026-01-09 · Nida Izhar Mallick, Izhar Uddin

A simpler and more efficient fixed point iterative scheme

Our work presents a new iterative scheme to approximate the fixed points of nonexpansive mapping. The proposed algorithm is constructed to enhance convergence efficiency while preserving theoretical robustness. Under appropriate assumptions on the underlying operator, we establish weak convergence and strong convergence results for...

💬 0 commentsarXiv:2601.05731v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-09 · B. F. Gribakin, N. E. Kopteva, D. R. Yakovlev, I. A. Akimov, I. V. Kalitukha, B. Turedi, M. V. Kovalenko, M. Bayer

Spin dynamics of excitons and carriers in mixed-cation MA$_{x}$FA$_{1-x}$PbI$_{3}$ perovskite crystals: alloy fluctuations probed by optical orientation

Optical spin orientation measured by time-resolved photoluminescence provides a powerful tool to probe the spin dynamics of excitons and charge carriers in perovskite semiconductors. The impact of alloy fluctuations on the spin dynamics of mixed-cation \MAFAPI{} perovskite single crystals is studied here experimentally. The optical...

💬 0 commentsarXiv:2601.05730v1PDF
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Posted in cs.CV · 2026-01-09 · Jin Wang, Jianxiang Lu, Guangzheng Xu, Comi Chen, Haoyu Yang, Linqing Wang, Peng Chen, Mingtao Chen, Zhichao Hu, Longhuang Wu, Shuai Shao, Qinglin Lu, Ping Luo

TAGRPO: Boosting GRPO on Image-to-Video Generation with Direct Trajectory Alignment

Recent studies have demonstrated the efficacy of integrating Group Relative Policy Optimization (GRPO) into flow matching models, particularly for text-to-image and text-to-video generation. However, we find that directly applying these techniques to image-to-video (I2V) models often fails to yield consistent reward improvements. To...

💬 0 commentsarXiv:2601.05729v2PDF
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Posted in econ.EM · 2026-01-09 · Martin Huber, Jannis Kueck, Mara Mattes

Learning and Testing Exposure Mappings of Interference using Graph Convolutional Autoencoder

Interference or spillover effects arise when an individual's outcome (e.g., health) is influenced not only by their own treatment (e.g., vaccination) but also by the treatment of others, creating challenges for evaluating treatment effects. Exposure mappings provide a framework to study such interference by explicitly modeling how the...

💬 0 commentsarXiv:2601.05728v1PDF
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Posted in cs.DL · 2026-01-09 · Alberto Baccini

A Stock-Flow Framework for Editorial Board Dynamics: The Case of Economics Journals, 1866-2019

Research on the editorial boards of scholarly journals has predominantly relied on static, cross-sectional data, focusing on their composition or interlocking editorships at single points in time. To address this gap, a formal stock-flow framework is developed for analyzing the longitudinal dynamics of editorial boards. The model...

💬 0 commentsarXiv:2601.05727v2PDF
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Posted in cond-mat.mes-hall · 2026-01-09 · Lassaad Mandhour, Frédéric Piéchon

Quantum geometric scattering of a Dirac particle by a Berry curvature domain wall

We investigate the scattering of a three-dimensional massless Dirac particle through a domain wall separating two regions with identical energy spectra but distinct Berry curvature dipoles. We demonstrate that the quantum geometric mismatch induces partial reflection and transmission despite identical incident and refracted momenta....

💬 0 commentsarXiv:2601.05726v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-09 · Yuchen Pu, Guoyi Shi, Hua Bai, Xinhou Chen, Chenhui Zhang, Zhaohui Li, Mehrdad Elyasi, Hyunsoo Yang

Observation of magnon torques mediated by orbital hybridization at the light metal/antiferromagnetic insulator interface

Magnon torques, which can operate without involving moving electrons, could circumvent the Joule heating issue. In conventional magnon torque systems, the spin source layer with strong spin-orbit coupling is utilized to inject magnons, and the efficiency is limited by the inherent spin Hall conductivity of the spin source layer. In...

💬 0 commentsarXiv:2601.05725v1PDF
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Posted in cs.AI · 2026-01-09 · Yuxuan Zhou, Fei Huang, Heng Li, Fengyi Wu, Tianyu Wang, Jianwei Zhang, Junyang Lin, Zhi-Qi Cheng

Overcoming Joint Intractability with Lossless Hierarchical Speculative Decoding

Verification is a key bottleneck in improving inference speed while maintaining distribution fidelity in Speculative Decoding. Recent work has shown that sequence-level verification leads to a higher number of accepted tokens compared to token-wise verification. However, existing solutions often rely on surrogate approximations or are...

💬 0 commentsarXiv:2601.05724v2PDF
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Posted in astro-ph.SR · 2026-01-09 · Umberto Battino, Marco Pignatari, Ashley Tattersall, Pavel Denissenkov, Falk Herwig

The NuGrid AGB Evolution and Nucleosynthesis Data Set

Asymptotic Giant Branch (AGB) stars play a key role in the chemical evolution of galaxies. These stars are the fundamental stellar site for the production of light elements such as C, N and F, and half of the elements heavier than Fe via the slow neutron capture process (s-process). Hence, detailed computational models of AGB stars'...

💬 0 commentsarXiv:2601.05723v1PDF
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Posted in cs.CV · 2026-01-09 · Jin Wang, Jianxiang Lu, Comi Chen, Guangzheng Xu, Haoyu Yang, Peng Chen, Na Zhang, Yifan Xu, Longhuang Wu, Shuai Shao, Qinglin Lu, Ping Luo

Rotate Your Character: Revisiting Video Diffusion Models for High-Quality 3D Character Generation

Generating high-quality 3D characters from single images remains a significant challenge in digital content creation, particularly due to complex body poses and self-occlusion. In this paper, we present RCM (Rotate your Character Model), an advanced image-to-video diffusion framework tailored for high-quality novel view synthesis...

💬 0 commentsarXiv:2601.05722v1PDF
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Posted in cs.SE · 2026-01-09 · Daniel Pöttgen, Mersedeh Sadeghi, Max Unterbusch, Andreas Vogelsang

From Issues to Insights: RAG-based Explanation Generation from Software Engineering Artifacts

The increasing complexity of modern software systems has made understanding their behavior increasingly challenging, driving the need for explainability to improve transparency and user trust. Traditional documentation is often outdated or incomplete, making it difficult to derive accurate, context-specific explanations. Meanwhile,...

💬 0 commentsarXiv:2601.05721v1PDF
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Posted in astro-ph.SR · 2026-01-09 · Anthony R. Yeates, Gunnar Hornig

Energy Bounds from Relative Magnetic Helicity in Spherical Shells

Relative magnetic helicity is commonly used in solar physics to avoid the well known gauge ambiguity of standard magnetic helicity in magnetically open domains. But its physical interpretation is difficult owing to the invocation of a reference field. For the specific case of spherical shell domains (with potential reference field),...

💬 0 commentsarXiv:2601.05720v1PDF
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Posted in cond-mat.other · 2026-01-09 · Jun Usami, Hiroshi Fukuyama

On the Novel Superfluidity in the Second Layer of $^4$He on Graphite

Evidence for a new type of superfluid phase in second-layer $^4$He on graphite has been obtained from simultaneous measurements of torsional-oscillator response and heat-capacity on exactly the same sample down to 30 mK, which resolve substrate-related uncertainties in the previous studies. The new phase hosts both superfluidity and...

💬 0 commentsarXiv:2601.05719v1PDF
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Posted in physics.plasm-ph · 2026-01-09 · Modhuchandra Laishram, Suresh Basnet, Young Dae Yoon

Kineclinic magnetogenesis in relativistic collisionless plasmas

The relativistic momentum equation of a collisionless plasma is reformulated to describe the time evolution of canonical vorticity. Compared to the non-relativistic counterpart, an additional source term for canonical vorticity is identified, which embodies the misalignment between the fluid momentum and fluid velocity gradients. This...

💬 0 commentsarXiv:2601.05718v1PDF
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Posted in physics.med-ph · 2026-01-09 · Jorge Roser, Hong Phuc Vo, Rebecca Kantorek, Steven Seeger, Magdalena Rafecas

Inclusion of Inter-crystal Scattering in PET: Analytical Models and Dedicated Reconstruction

Inter-crystal scattering (ICS) in Positron Emission Tomography (PET) is commonly regarded as a degradation effect that might compromise the image spatial resolution. In parallel, the inclusion of ICS events has also been recognized as a potential approach to increase PET sensitivity, which could be especially beneficial in scenarios...

💬 0 commentsarXiv:2601.05717v2PDF
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Posted in q-fin.CP · 2026-01-09 · Sungwoo Kang

When the Rules Change: Adaptive Signal Extraction via Kalman Filtering and Markov-Switching Regimes

Most empirical microstructure research assumes that order flow--return parameters are constant, yet these relationships shift substantially across market regimes. Combining adaptive Kalman filtering, Markov-switching regime identification, and asymmetric response estimation, we characterize regime-dependent investor behavior in the...

💬 0 commentsarXiv:2601.05716v2PDF
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Posted in cs.CV · 2026-01-09 · Zhaoze Wang, Changxu Zhang, Tai Fei, Christopher Grimm, Yi Jin, Claas Tebruegge, Ernst Warsitz, Markus Gardill

Synthetic FMCW Radar Range Azimuth Maps Augmentation with Generative Diffusion Model

The scarcity and low diversity of well-annotated automotive radar datasets often limit the performance of deep-learning-based environmental perception. To overcome these challenges, we propose a conditional generative framework for synthesizing realistic Frequency-Modulated Continuous-Wave radar Range-Azimuth Maps. Our approach...

💬 0 commentsarXiv:2601.06228v1PDF
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Posted in math.AG · 2026-01-09 · Atabey Kaygun

Geometric Rigidity in Moduli Stacks of Algebras

We study quadratic moduli schemes $X$ of algebra laws on a fixed vector space $W$ under the transport-of-structure action of $GL(W)$ on $Hom(W^{\otimes 2},W)$. We construct an intrinsic three-term deformation complex on $X$ whose fibers encode transverse first-order classes and primary obstructions, and whose cohomology agrees on the...

💬 0 commentsarXiv:2601.05715v1PDF
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Posted in math.PR · 2026-01-09 · Simone Baldassarri, Vanessa Jacquier, Alessandro Zocca

Metastable opinion dynamics with hidden preferences: an Ising model with neutral agents

We introduce a new Ising-type framework for opinion dynamics that explicitly separates private preferences from publicly expressed binary opinions and naturally incorporates neutral agents. Each individual is endowed with an immutable hidden preference, while public opinions evolve through Metropolis dynamics on a finite graph. This...

💬 0 commentsarXiv:2601.05714v1PDF
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Posted in cs.CL · 2026-01-09 · Thomas Fabian

Visualising Information Flow in Word Embeddings with Diffusion Tensor Imaging

Understanding how large language models (LLMs) represent natural language is a central challenge in natural language processing (NLP) research. Many existing methods extract word embeddings from an LLM, visualise the embedding space via point-plots, and compare the relative positions of certain words. However, this approach only...

💬 0 commentsarXiv:2601.05713v1PDF
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Posted in cond-mat.mtrl-sci · 2026-01-09 · P. W. Muchiri, K. K. Korir, N. W. Makau, M. O. Atambo, G. O. Amolo

Unraveling the effects of anionic vacancies and temperature on mechanical properties of NbC and NbN: Insights from Quantum Mechanical Study

Transition metal carbides and nitrides (TMCNs), such as niobium carbide (NbC) and niobium nitride (NbN), are of great technological interest due to their exceptional hardness, high melting points, and thermal stability. While previous studies have focused on their groundstate properties (at 0 K), limited information exists on their...

💬 0 commentsarXiv:2601.05712v1PDF
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Posted in stat.ME · 2026-01-09 · Jiayi Wang

Conditional Cauchy-Schwarz Divergence for Time Series Analysis: Kernelized Estimation and Applications in Clustering and Fraud Detection

We study the conditional Cauchy-Schwarz divergence (C-CSD) as a symmetric and density-free measure for time series analysis. We derive a practical kernel based estimator using radial basis function kernels on both the condition and output spaces, together with numerical stabilizations including a symmetric logarithmic form with an...

💬 0 commentsarXiv:2601.05711v1PDF
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Posted in astro-ph.SR · 2026-01-09 · Umberto Battino, Claudia Lederer-Woods, Marco Pignatari, Benjamin Soos, Maria Lugaro, Diego Vescovi, Sergio Cristallo, Philip J Woods, Amanda Karakas

Impact of newly measured 26Al(n, p)26Mg and 26Al(n, α)23Na reaction rates on the nucleosynthesis of 26Al in stars

The cosmic production of the short-lived radioactive nuclide 26Al is crucial for our understanding of the evolution of stars and galaxies. However, simulations of the stellar sites producing 26Al are still weakened by significant nuclear uncertainties. We re-evaluate the 26Al(n, p)26Mg, and 26Al(n, α)23Na ground state reactivities...

💬 0 commentsarXiv:2601.05710v1PDF