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AI & Data Science Preprint PDF DOI

Intersectional Fairness in Large Language Models

Chaima Boufaied, Ronnie De Souza Santos, Ann Barcomb ยท 2026

Large Language Models (LLMs) are increasingly deployed in socially sensitive settings, raising concerns about fairness and biases, particularly across intersectional demographic attributes. In this paโ€ฆ

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Physics Preprint PDF DOI

Time evolution of a Nambu-Goto string coiling around a Kerr black hole

Hirotaka Yoshino, Kousuke Tanaka ยท 2026

The interaction between a Nambu-Goto string and a Kerr black hole gives one of the methods of energy extraction from a rotating black hole. Although the properties of such processes have been well stuโ€ฆ

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Mathematics Preprint PDF DOI

A weighted angle distance on strings

Grant Molnar ยท 2026

We define a multi-scale metric $d_\rho$ on strings by aggregating angle distances between all $n$-gram count vectors with exponential weights $\rho^n$. We benchmark $d_\rho$ in DBSCAN clustering againโ€ฆ

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Physics Preprint PDF DOI

$P_{c\bar cs}(4459)^{0}$, $P_{c\bar c s}(4338)^0$ and mass spectrum of strange hidden-charm pentaquarks

Zhe-Hao Cao, Zhi-Yuan Chen, You-You Lin, Ji-Ying Wang, Ailin Zhang ยท 2026

Strange hidden-charm pentaquark states have been systematically investigated within a diquark-triquark model. Through a Gaussian expansion method, masses of some diquarks, triquarks and strange hiddenโ€ฆ

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Physics Preprint PDF DOI

Superconductivity in bilayer La$_3$Ni$_2$O$_7$: A review focusing on the strong-coupling Hund's rule assisted pairing mechanism

Zhiming Pan, Chen Lu, Fan Yang, Congjun Wu ยท 2026

Discovery of high-$T_c$ superconductivity (SC) in the bilayer nickelate series La$_3$Ni$_2$O$_7$ have attracted substantial interest, providing a new platform for exploring unconventional SC. Certain โ€ฆ

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Engineering Preprint PDF DOI

Model Predictive Communication for Timely Status Updates in Low-Altitude Networks

Bowen Li, Jiping Luo, Themistoklis Charalambous, Nikolaos Pappas ยท 2026

Timely information delivery in low-altitude networks is critical for many time-sensitive applications, such as unmanned aerial vehicle (UAV) navigation, inspection, and surveillance. The key challengeโ€ฆ

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Mathematics Preprint PDF DOI

Beyond Bass Collapse: New Irregular Edge-Space Invariants in Ihara Theory

Hartosh Singh Bal ยท 2026

Let \(G\) be a finite simple graph and let \(T\) be its Hashimoto operator on the directed-edge space. We show that edge reversal induces a canonical symmetric/antisymmetric splitting under which \(T\โ€ฆ

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AI & Data Science Preprint PDF DOI

LayerTracer: A Joint Task-Particle and Vulnerable-Layer Analysis framework for Arbitrary Large Language Model Architectures

Yuhang Wu, Qinyuan Liu, Qiuyang Zhao, Qingwei Chong ยท 2026

Currently, Large Language Models (LLMs) feature a diversified architectural landscape, including traditional Transformer, GateDeltaNet, and Mamba. However, the evolutionary laws of hierarchical represโ€ฆ

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Physics Preprint PDF DOI

Bulk and surface electronic structure of MoAlB(010)

Gianmarco Gatti, Amalie H. Svaneborg, Wu Bing, Gesa-R. Siemann, Anders S. Mortensen, Naina Kushwaha, Jennifer Rigden, Jakob K. Svaneborg, Matthew D. Watson, Timur K. Kim, Charlotte E. Sanders, Kristian S. Thygesen, Zdenek Sofer, Philip Hofmann ยท 2026

The bulk and surface electronic structure of MoAlB(010) is studied by a combination of angle-resolved photoemission spectroscopy and density functional calculations. The observed bulk Fermi-level crosโ€ฆ

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Physics Preprint PDF DOI

Astrophysically Realistic Secondary Spins Trigger Chaos in Schwarzschild Spacetime and Discernible Gravitational Wave Signatures

Dan-Dan Yuan, Jia-Geng Jiao, Yu-Qi Lei, Jun-Xi Shi, Jing-Qi Lai, Caiying Shao, Yu Tian ยท 2026

Chaos in extreme-mass-ratio inspirals is often thought to require unrealistically large secondary spins, making its astrophysical relevance uncertain. However, we find that chaos persists across the aโ€ฆ

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Mathematics Preprint PDF DOI

Intersecting families with bounded intersections

Kristina Ago, Gyula O.H. Katona ยท 2026

Let $\mathcal F\subset 2^{[n]}$ be an $s$-uniform family such that every two distinct sets have a nonempty intersection but intersect in at most $k$ elements. By the well-known Ray-Chaudhuri--Wilson tโ€ฆ

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Physics Preprint PDF DOI

Baudrate- and Reach-Flexible All-Optical Equalization with a Co-Packaged Photonic Reservoir and Receiver

Sarah Masaad, Jakob Declercq, Stijn Sackesyn, Ruben Van Assche, Hasan Salmanian, Andrzej Polatynski, Dimitrios Chatzitheocharis, Konstantinos Vyrsokinos, Tatiana Buriakova, Christophe Caillaud, Stylianos Sygletos, Xin Yin, Peter Bienstman ยท 2026

Intensity-modulation direct-detection links must support increasing baudrates and transmission distances while operating under stringent power and cost constraints. However, as data rates and reaches โ€ฆ

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Computer Science Preprint PDF DOI

A New Paradigm Towards Reconfigurable Environment: Reconfigurable Distributed Antennas and Reflecting Surface

Jintao Wang, Pingping Zhang, Chengzhi Ma, Chengwang Ji, Zheng Shi, Guanghua Yang, Shaodan Ma ยท 2026

Reconfigurable distributed antennas and reflecting surface (RDARS) has emerged as a transformative solution to address the stringent requirements of future wireless networks. By combining distributed โ€ฆ

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Physics Preprint PDF DOI

Quantum Optical Signatures of Band Topology in Solid-State High Harmonics

Denis Ilin, Alexander S. Solntsev, Ivan Iorsh ยท 2026

We develop a general theory of high-harmonic generation (HHG) in solid-state systems, based on a weak-correlation expansion of photonic and matter degrees of freedom. Unlike standard HHG theories, whiโ€ฆ

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Physics Preprint PDF DOI

Baryon-Meson Sum Rule for $b \to s \nu\bar\nu$

Teppei Kitahara, Manas Kumar Mohapatra, Kota Sasaki ยท 2026

We derive a robust sum rule among the branching fractions of $\Lambda_b \to \Lambda \nu \bar\nu$ and $B \to K^{(\ast)} \nu\bar\nu$, assuming that right-handed neutrinos are decoupled. Despite the presโ€ฆ

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Mathematics Preprint PDF DOI

Globally Simple Heffter Arrays $H(n;k)$ with $k \equiv 1 \pmod{4}$

Erik Pelttari, Selda Kucukcifci, E. Sule Yaz{i}c{i} ยท 2026

Heffter arrays are combinatorial structures used to construct orthogonal cyclic cycle decompositions and biembeddings of complete graphs onto surfaces. A Heffter array $H(m,n;h,k)$ is an $m \times n$ โ€ฆ

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Mathematics Preprint PDF DOI

Entropy lower bounds and sum-product phenomena

Lampros Gavalakis, Marcel K. Goh, Ioannis Kontoyiannis ยท 2026

Various lower bounds are established for the entropy of sums, products and their combinations. First, we derive a prime-field analogue of a version of the entropy power inequality established by Tao oโ€ฆ

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Earth & Environmental Sciences Preprint PDF DOI

Sub-Neptunes Show a Stronger Correlation with Cold Jupiters than Super-Earths Especially in Metal-rich Systems

Di-Chang Chen, Fei Dai, Bo Ma, Shang-Fei Liu, Cong Yu ยท 2026

Correlations between the inner small planets and cold giants encodes the formation and evolution of planetary systems. It remains unclear if the correlation differs on the two sides of the radius vallโ€ฆ

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AI & Data Science Preprint PDF DOI

Chasing the Public Score: User Pressure and Evaluation Exploitation in Coding Agent Workflows

Hardy Chen, Nancy Lau, Haoqin Tu, Shuo Yan, Xiangyan Liu, Zijun Wang, Juncheng Wu, Michael Qizhe Shieh, Alvaro A. Cardenas, Cihang Xie, Yuyin Zhou ยท 2026

Frontier coding agents are increasingly used in workflows where users supervise progress primarily through repeated improvement of a public score, namely the reported score on a public evaluation fileโ€ฆ

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AI & Data Science Preprint PDF DOI

WildFireVQA: A Large-Scale Radiometric Thermal VQA Benchmark for Aerial Wildfire Monitoring

Mobin Habibpour, Niloufar Alipour Talemi, John Spodnik, Camren J. Khoury, Fatemeh Afghah ยท 2026

Wildfire monitoring requires timely, actionable situational awareness from airborne platforms, yet existing aerial visual question answering (VQA) benchmarks do not evaluate wildfire-specific multimodโ€ฆ

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