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On the Golomb-Dickman constant under Ewens sampling

Mendonça, José Ricardo G.; Negret, Luis Jehiel

arXiv · 2026 · English · arXiv

We define a generalized Golomb-Dickman constant $λ_θ$ as the limiting expected proportion of the longest cycle in random permutations under the Ewens measure with parameter $θ> 0$. Exploiting the independence properties of Kingman's Poisson process construction of the Poisson-Dirichlet…

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Note on KSW-allowability of Wine-Glass Geometry

Ailiga, Manishankar; Narain, Gaurav

arXiv · 2026 · English · arXiv

In this note we consider no-boundary instantons and wine-glass geometries which are of interest in the context of quantum cosmology. While the former usually appears as a dominant saddle in the path-integral, the wineglass geometry can become dominant saddle in some situations. The later has been…

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Behaviour of the model antibody fluid constrained by rigid spherical obstacles: effects of the obstacle-antibody binding

Kalyuzhnyi, Yu. V.; Patsahan, T.

arXiv · 2026 · English · arXiv

We study a simplified model of monoclonal antibodies confined in a patchy random porous medium. Antibodies are represented as Y-shaped particles composed of seven tangential hard spheres with attractive patches on the terminal beads, while the matrix consists of randomly distributed hard-sphere…

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The KPF-SLOPE Survey - Small, Compact Multi-Planet Systems Appear Spin-Orbit Aligned

Handley, Luke B.; Howard, Andrew W.; Dai, Fei et al.

arXiv · 2026 · English · arXiv

The angle between stellar spin axes and planetary orbits -- stellar obliquity -- probes the dynamics of planetary migration and evolution. The obliquities of giant planets have been extensively studied because they are the most easily measured. Smaller planets, while more difficult to measure, have…

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Deep learning approaches to extract nuclear deformation parameters from initial-state information in heavy-ion collisions

Tao, Jun-Qi; Liu, Yang; Sha, Yu et al.

arXiv · 2026 · English · arXiv

The deformation of heavy nuclei leaves characteristic imprints on the initial conditions of relativistic heavy-ion collisions. However, event-by-event fluctuations make the quantitative extraction of this information challenging. This study examines the identifiability of the quadrupole ($β_2$) and…

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Kobayashi length bounds on bordered surfaces and generalized integral points on abelian varieties

Dolce, Paolo

arXiv · 2026 · English · arXiv

Let $B$ be a compact Riemann surface and $B_0\subset B$ a bordered hyperbolic subsurface obtained by removing finitely many disjoint closed disks. Fix a nontrivial loop $α$ in $B_0$. For $s\ge 0$, let $L(α,s)$ denote the supremum, over all finite subsets $S\subset B_0$ with $\#S\le s$, of the…

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Direct cosmographic reconstruction of the quintessence potential

Chakraborty, Saikat; Dunsby, Peter K. S.; Scherrer, Robert J.

arXiv · 2026 · English · arXiv

We derive expressions for the first and second derivatives of the quintessence potential $V(ϕ)$, in terms of $λ= -V^{\prime}/V$ and $Γ= (V^{\prime \prime}/V)/(V^\prime/V)^2$, as functions of the quintessence density fraction $Ω_ϕ$ and the cosmographic parameters $q$, $j$, and $s$. Our mapping is…

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Memory-Augmented Vision-Language Agents for Persistent and Semantically Consistent Object Captioning

Galliena, Tommaso; Rosa, Stefano; Apicella, Tommaso et al.

arXiv · 2026 · English · arXiv

Vision-Language Models (VLMs) often yield inconsistent descriptions of the same object across viewpoints, hindering the ability of embodied agents to construct consistent semantic representations over time. Previous methods resolved inconsistencies using offline multi-view aggregation or…

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Software Supply Chain Smells: Lightweight Analysis for Secure Dependency Management

Schmid, Larissa; Gaspar, Diogo; Liu, Raphina et al.

arXiv · 2026 · English · arXiv

Modern software systems heavily rely on third-party dependencies, making software supply chain security a critical concern. We introduce the concept of software supply chain smells as structural indicators that signal potential security risks. We design and evaluate Dirty-Waters, a novel tool for…

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Memory effect from the scattering of Taub-NUT black holes

Doran, George; Monteiro, Ricardo; Moynihan, Nathan

arXiv · 2026 · English · arXiv

Taub-NUT black holes are somewhat exotic solutions to the vacuum Einstein equations, which have received limited attention in gravitational phenomenology. We use the soft behaviour of scattering amplitudes to compute the memory effect of the waveform resulting from the scattering of Kerr-Taub-NUT…

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Unbiased Multimodal Reranking for Long-Tail Short-Video Search

Xu, Wenyi; Zhu, Feiran; Li, Songyang et al.

arXiv · 2026 · English · arXiv

Kuaishou serving hundreds of millions of searches daily, the quality of short-video search is paramount. However, it suffers from a severe Matthew effect on long-tail queries: sparse user behavior data causes models to amplify low-quality content such as clickbait and shallow content. The recent…

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IrisFP: Adversarial-Example-based Model Fingerprinting with Enhanced Uniqueness and Robustness

Geng, Ziye; Yang, Guang; Chen, Yihang et al.

arXiv · 2026 · English · arXiv

We propose IrisFP, a novel adversarial-example-based model fingerprinting framework that enhances both uniqueness and robustness by leveraging multi-boundary characteristics, multi-sample behaviors, and fingerprint discriminative power assessment to generate composite-sample fingerprints. Three key…

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Optimal threshold resetting in collective diffusive search

Biswas, Arup; Majumdar, Satya N; Pal, Arnab

arXiv · 2026 · English · arXiv

Stochastic resetting has attracted significant attention in recent years due to its wide-ranging applications across physics, biology, and search processes. In most existing studies, however, resetting events are governed by an external timer and remain decoupled from the system's intrinsic…

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Send the Key in Cleartext: Halving Key Consumption while Preserving Unconditional Security in QKD Authentication

De Lazzari, Claudia; Stocco, Francesco; Signorini, Edoardo et al.

arXiv · 2026 · English · arXiv

Quantum Key Distribution (QKD) protocols require Information-Theoretically Secure (ITS) authentication of the classical channel to preserve the unconditional security of the distilled key. Standard ITS schemes are based on one-time keys: once a key is used to authenticate a message, it must be…

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Sensitivity Analysis for Instrumental Variables Under Joint Relaxations of Monotonicity and Independence

Picchetti, Pedro

arXiv · 2026 · English · arXiv

In this paper I develop a breakdown frontier approach to assess the sensitivity of Local Average Treatment Effects (LATE) estimates to violations of monotonicity and independence of the instrument. I parametrize violations of independence using the concept of $c$-dependence from Masten & Poirier…

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Amplitude analysis and branching fraction measurement of the decay $D^0 \to K^+K^-π^0π^0$

BESIII Collaboration; Ablikim, M.; Achasov, M. N. et al.

arXiv · 2026 · English · arXiv

An amplitude analysis of the singly Cabibbo-suppressed decay $D^0 \to K^+ K^- π^0 π^0$ is performed, for the first time, to determine the relative magnitudes and phases of different intermediate processes. The analysis uses $e^+e^-$ collision data collected with the BESIII detector at the…

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Atomic Gradient Flows: Gradient Flows on Sparse Representations

Amend, Christian; Carioni, Marcello; Zemas, Konstantinos

arXiv · 2026 · English · arXiv

One of the most popular approaches for solving total variation-regularized optimization problems in the space of measures are Particle Gradient Flows (PGFs). These restrict the problem to linear combinations of Dirac deltas and then perform a Euclidean gradient flow in the weights and positions…

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Vega: Learning to Drive with Natural Language Instructions

Zuo, Sicheng; Li, Yuxuan; Zheng, Wenzhao et al.

arXiv · 2026 · English · arXiv

Vision-language-action models have reshaped autonomous driving to incorporate languages into the decision-making process. However, most existing pipelines only utilize the language modality for scene descriptions or reasoning and lack the flexibility to follow diverse user instructions for…

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Circular Future of Yukawa Unification in Supersymmetric Pati-Salam Model: Stop on Neutralino

Cici, Ali; Nis, Busra; Un, Cem Salih

arXiv · 2026 · English · arXiv

We explore the low scale implications of SUSY models based on the gauge symmetry SU(4)_CxSU(2)_LxSU(2)_R. We include the non-holomorphic terms arises from the perturbations on D-branes, which also break SUSY. These terms significantly change the implications of Yukawa unification, since they are…

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Understanding AI Methods for Intrusion Detection and Cryptographic Leakage

Zilouchian, Reza; Chavez, Michael; Koch, Fernando

arXiv · 2026 · English · arXiv

We investigate the role of artificial intelligence in cybersecurity by evaluating how machine learning techniques can detect malicious network activity and identify potential information leakage in cryptographic implementations. We conduct a series of experiments using the NSL-KDD and CIC-IDS…

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