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Probing anisotropic particle acceleration and limb-brightening in Centaurus A's jet

Glaser, Felix; Fromm, Christian M.; Ricci, Luca et al.

arXiv · 2026 · English · arXiv

Relativistic jets are among the most fascinating objects in the Universe, and recent high-resolution Very Long Baseline Interferometric (VLBI) observations, including the Global mm-VLBI Array and the Event Horizon Telescope (EHT), are able to resolve their structure close to their launching site…

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A Solution Concept for Convex Vector Optimization Problems based on a User-defined Region of Interest

Dörfler, Daniel; Köhler, Rebecca; Löhne, Andreas

arXiv · 2026 · English · arXiv

This work addresses arbitrary convex vector optimization problems, which constitute a general framework for multi-criteria decision-making in diverse real-world applications. Due to their complexity, such problems are typically tackled using polyhedral approximation. Existing solution concepts rely…

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Automated near-term quantum algorithm discovery for molecular ground states

Finger, Fabian; Rapp, Frederic; Kalidindi, Pranav et al.

arXiv · 2026 · English · arXiv

Designing quantum algorithms is a complex and counterintuitive task, making it an ideal candidate for AI-driven algorithm discovery. To this end, we employ the Hive, an AI platform for program synthesis, which utilises large language models to drive a highly distributed evolutionary process for…

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Biological Time Equivalence in Vertebrates: Thermodynamic Framework, Comparative Tests, and Clade-Specific Deviations

Taye, Mesfin

arXiv · 2026 · English · arXiv

The product of resting heart rate and maximum lifespan is approximately constant across adult warm-blooded vertebrates, $N^\star = f_H L \approx 10^9$ cardiac cycles, a regularity documented since Rubner (1908) but lacking a thermodynamic derivation. We derive $N^\star$ from the non-equilibrium…

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Continuity of the complex Monge-Ampère operator on compact Hermitian manifolds

Hai, Le Mau; Van Phu, Nguyen; Tung, Trinh

arXiv · 2026 · English · arXiv

In this note, we establish several results concerning the continuity (or weak convergence) of the complex Monge-Ampère operator on compact Hermitian manifolds. At the end of this note, we find a weak solution of the complex Monge-Ampère equation on a compact Hermitian manifold under the assumption…

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CPUBone: Efficient Vision Backbone Design for Devices with Low Parallelization Capabilities

Nottebaum, Moritz; Dunnhofer, Matteo; Micheloni, Christian

arXiv · 2026 · English · arXiv

Recent research on vision backbone architectures has predominantly focused on optimizing efficiency for hardware platforms with high parallel processing capabilities. This category increasingly includes embedded systems such as mobile phones and embedded AI accelerator modules. In contrast, CPUs do…

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Ruka-v2: Tendon Driven Open-Source Dexterous Hand with Wrist and Abduction for Robot Learning

Liu, Xinqi Lucas; Hu, Ruoxi; Olarte, Alejandro Ojeda et al.

arXiv · 2026 · English · arXiv

Lack of accessible and dexterous robot hardware has been a significant bottleneck to achieving human-level dexterity in robots. Last year, we released Ruka, a fully open-sourced, tendon-driven humanoid hand with 11 degrees of freedom - 2 per finger and 3 at the thumb - buildable for under $1,300…

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Structure-preserving stochastic parameterization of a barotropic coupled ocean-atmosphere model with Ornstein--Uhlenbeck noise

Sharma, Kamal Kishor; Korn, Peter

arXiv · 2026 · English · arXiv

We present the first application of the stochastic advection by Lie transport (SALT) framework to an idealized coupled ocean-atmosphere system. SALT derives stochastic fluid equations from Hamilton's variational principle under a stochastic Lagrangian kinematic assumption, thereby preserving the…

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Self-Consistent Modelling of Neutrino Production in Turbulent Black Hole Coronae

Bihan, Sébastien Le; Lemoine, Martin; Rieger, Frank

arXiv · 2026 · English · arXiv

Stochastic particle acceleration in magnetized turbulent plasmas has emerged as a key mechanism to explain multi-messenger signals from compact astrophysical environments. Self-consistent modelling remains challenging because it requires to treat simultaneously several non-linear kinetic processes…

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$Pin^{-}(2)$ Bauer-Furuta invariants

Wu, Hao

arXiv · 2026 · English · arXiv

Adapting Bauer and Furuta's constructions of the refinement of the Seiberg-Witten invariants, we establish the analogous stable cohomotopy refinement of the $Pin^{-}(2)$ monopole invariants proposed by Nakamura \cite{nakamura2015pin}, and give the corresponding connected sum formula.

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Weighted Sum-Rate Maximization for RIS-UAV-assisted Space-Air-Ground Integrated Network with RSMA

He, Jian; Zhou, Cong; Shi, Shuo

arXiv · 2026 · English · arXiv

In this paper, a rate-splitting multiple access (RSMA) based joint optimization framework for the space-air-ground integrated network (SAGIN) is proposed, where the satellite and base stations employ uniform planar array (UPA) antennas for signal transmission, and unmanned aerial vehicles (UAVs)…

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Posterior contraction under misspecification and heteroscedasticity in non-linear inverse problems

Seizilles, Fanny; Siebel, Maximilian

arXiv · 2026 · English · arXiv

In many practical and numerical inverse problems, the exact data log-likelihood is not fully accessible, motivating the use of surrogate models. We study heteroscedastic nonparametric nonlinear regression problems with Gaussian errors and establish contraction results for posterior distributions…

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Maskless Electron Beam-Induced Etching of Diamond in Air: A Secondary Electron-Driven Mechanism

Tran, Duc-Duy; Mannequin, Cedric; Donatini, Fabrice et al.

arXiv · 2026 · English · arXiv

We report a direct, maskless electron beam-induced etching (EBIE) process for diamond in air, enabling high-precision patterning without lithography or plasma processing. Through a comprehensive analysis of electron-gas, electron-diamond, and gas-surface interactions in the SEM environment, we…

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Spinning Particles around Einstein-Geometric Proca AdS Compact Objects

Rakhimova, Gulzoda; Puliçe, Beyhan; Ghorani, Elham et al.

arXiv · 2026 · English · arXiv

We investigate the dynamics of spinning test particles in the vicinity of Einstein--geometric Proca (EGP) Anti-de Sitter (AdS) compact objects, which arise from metric-Palatini gravity extended by the antisymmetric part of the affine curvature. Using the Mathisson-Papapetrou-Dixon (MPD) equations…

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A Closer Look at Cross-Domain Few-Shot Object Detection: Fine-Tuning Matters and Parallel Decoder Helps

Yu, Xuanlong; Sha, Youyang; Liu, Longfei et al.

arXiv · 2026 · English · arXiv

Few-shot object detection (FSOD) is challenging due to unstable optimization and limited generalization arising from the scarcity of training samples. To address these issues, we propose a hybrid ensemble decoder that enhances generalization during fine-tuning. Inspired by ensemble learning, the…

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AXON: An Automated Netlist Optimization Framework for High-Speed Adders

Yang, Tiantian; Ren, Xuanle; Wan, Qingdian et al.

arXiv · 2026 · English · arXiv

Adders are fundamental building blocks in modern digital systems, and their performance, power, and area (PPA) directly impact system efficiency. Contemporary adders typically use parallel-prefix architectures with established PPA trade-offs, but these often fail to deliver globally optimal PPA for…

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Critical regularity of nilpotent groups acting on one-dimensional compact manifolds

Escayola, Maximiliano; Kleptsyn, Victor

arXiv · 2026 · English · arXiv

Given a finitely generated, torsion-free nilpotent group, we find the maximum possible (critical) regularity for its faithful actions by diffeomorphisms of the closed or half-open interval and of the circle. Our result gives an expression for its value in purely algebraic terms (using the relative…

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Tomonaga-Luttinger liquid and charge-density wave in a quasi-one-dimensional material

Li, Jing; Yang, Guo-Wei; Li, Bai-Zhuo et al.

arXiv · 2026 · English · arXiv

In one-dimensional (1D) electron systems, the Fermi liquid state breaks down due either to electron interactions, which results in a Tomonaga-Luttinger liquid (TLL) state, or to Peierls instability, which leads to an insulating charge-density-wave (CDW) phase. In general, these two phenomena are…

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Grain boundary defects induced Tc increment in MnSi

Benedit-Cardenas, Adrian; Fox, Tobias; Bruyère, Stéphanie et al.

arXiv · 2026 · English · arXiv

The rapid advancement of digital technologies necessitates significant progress in functional materials, which are often derived from scarce elements and involve complex manufacturing processes. Additionally, the trend towards miniaturization in high-tech devices has heightened the demand for…

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Kohler-Jobin inequality for $p$-Laplace operator in the Gauss space

Chiacchio, Francesco; Ferone, Vincenzo; Mercaldo, Anna et al.

arXiv · 2026 · English · arXiv

A sharp lower bound for the first Dirichlet eigenvalue of the $p$-laplacian in Gaussian space is derived for sets with prescribed generalized torsional rigidity. The result provides an extension of the classical spectral inequality due to Kohler-Jobin. The proof is based on a careful analysis of…

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