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Physics Preprint PDF DOI

Blazar flares from plasma blobs crossing the broad-line region

Sebastien Le Bihan, Anton Dmytriiev, Andreas Zech · 2026

The blazar 3C 279 is well known for its rapid and large-amplitude variability. On 20 December 2013, the source exhibited an orphan {\gamma}-ray flare characterized by a flux-doubling timescale of a fe…

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AI & Data Science Preprint PDF DOI

Robust Nonparametric Testing Approaches for Spatial Regression

Kanghyun Wi, Hyoeun Kim, Tomas Mrkvicka, Jorge Mateu, Jaewoo Park · 2026

Determining significant covariates is a fundamental problem in spatial regression analysis. However, parametric assumptions limit flexibility and can lead to inaccurate inference when misspecified. To…

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Mathematics Preprint PDF DOI

Torus Equivariant Cohomology for the $\Delta$-Springer Fiber

Raymond Chou · 2026

We define a torus $U \subset T = (\mathbb{C}^\times)^K$ which acts on the $\Delta$-Springer varieties $Y_{n,\lambda,s}$ defined by Griffin-Levinson-Woo and give a Borel-style presentation for the equi…

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Mathematics Preprint PDF DOI

Optimal response for stochastic differential equations in $\mathbb{T}^d$ with perturbations on the drift term

Gianmarco Del Sarto, Franco Flandoli, Stefano Galatolo, Sakshi Jain, Angxiu Ni · 2026

We study stochastic differential equations on the $d$-dimensional flat torus $\mathbb{T}^d$ with drift and perturbation coefficients in $L^{\infty}(\mathbb{T}^d;\mathbb{R}^d)$ and additive non-degener…

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Physics Preprint PDF DOI

VBr >10 kV E-Beam/Sputtered Vertical NiOx/(011) \beta-Ga2O3 HJDs with PFOM >2.3 GW/cm2

Yizheng Liu, Carl Peterson, Chinmoy Nath Saha, Marko J. Tadjer, Sriram Krishnamoorthy · 2026

Beta-gallium oxide (\beta-Ga2O3) holds enormous potential for medium voltage range power electronic applications. This work reports VBr > 10 kV/Ron,sp = 43 m\Omega*cm2 class edge terminated vertical h…

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Computer Science Preprint PDF DOI

New Diameter Approximations via Distance Oracle Techniques

Yael Kirkpatrick, Liam Roditty, Richard Qi, Virginia Vassilevska Williams · 2026

Computing the diameter of a graph is a problem of great interest both in general algorithms research and specifically within fine-grained complexity, where it is a cornerstone hard problem. Recent wor…

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Mathematics Preprint PDF DOI

Hamilton decompositions of the directed 5-torus for odd modulus

SangHyun Park · 2026

We prove that the directed five-dimensional torus $D_5(m) = \operatorname{Cay}((\mathbb{Z}_m)^5, \{e_0, e_1, e_2, e_3, e_4\})$ has a Hamilton decomposition for every odd integer $m \geq 3$. This is th…

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Computer Science Preprint PDF DOI

Weighted Emulators with Local Heaviest Edges Stretch for Undirected Graphs

Liam Roditty, Ariel Sapir · 2026

We introduce a generalized family of $\left( 2\cdot \left\lfloor \frac{k}{2} \right\rfloor-1, 2\cdot \left\lceil \frac{k}{2} \right\rceil \cdot W_{1} +\max\left\{0,2\cdot\left(\left\lceil\frac{k}{2}\r…

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Mathematics Preprint PDF DOI

Brane quantization and SYZ mirror symmetry

Kwokwai Chan, Naichung Conan Leung, Qin Li, Yat-Hin Suen, Yutung Yau · 2026

Coisotropic A-branes were introduced by Kapustin--Orlov to enlarge the Fukaya category of a symplectic manifold in a way that aligns with predictions from homological mirror symmetry. From a mathemati…

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Mathematics Preprint PDF DOI

Exterior-Model Spinors in Split Rank: Exact Levi Images and Square-Determinant Obstructions

Arthur F. Ramos, David B. Hulak, Ruy J. G. B. de Queiroz · 2026

Let $K$ be a field with $2 \in K^\times$, and let $H_W$ denote the standard hyperbolic form on $W \oplus W^*$. We study the exterior spinor model $S = \bigwedge V(W)$ together with the spin-to-orthogo…

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Mathematics Preprint PDF DOI

Counterexamples to an Extremal Conjecture for Random Cycle-Factors

Rishikesh Gajjala · 2026

Christoph, Dragani\'{c}, Gir\~{a}o, Hurley, Michel, and M\"{u}yesser conjectured that, when $d\mid n$, the expected number of cycles in a uniformly random cycle-factor of a directed $d$-regular graph …

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Mathematics Preprint PDF DOI

GIT quotient of minimal dimensional Schubert variety modulo a subtorus

Arkadev Ghosh, S. S. Kannan · 2026

Let $G=PSL(n,\mathbb{C})$. Let $T$ be a maximal torus of $G$. Let $\omega_{r}$ denote the $r^{th}$ fundamental weight. Let $\mathcal{L}(n\omega_{r})$ denote the line bundle on the Grassmannian $G_{r,n…

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Mathematics Preprint PDF DOI

$\Gamma$-convergence, variational analysis and characterisation of minimisers for $(s,p)$-Gagliardo energies in the flat $d$-torus

G. Pini, F. Santilli · 2026

This paper deals with the variational analysis, for every $s \in (0,1)$ and $p \in [1,+\infty)$, of $(s,p)$-Gagliardo seminorms in a periodic setting. First, we consider the space of $L^p$, $T$-period…

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Mathematics Preprint PDF DOI

Reciprocity and the Maslov Phase

Jonathan Holland · 2026

We give a metaplectic proof of Hilbert reciprocity, and hence of quadratic reciprocity, in which the local phase is the Kashiwara--Maslov phase of a triple of Lagrangians. In rank two the phase of the…

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Mathematics Preprint PDF DOI

Link homology and loop homology

Joshua Wang · 2026

We compute the $k$-colored $\mathfrak{sl}(N)$ homology of the torus knot $T(2,2m+1)$, and we show that it stabilizes as $m\to\infty$ to the integral homology of the free loop space of the complex Gras…

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Physics Preprint PDF DOI

Decoupling the AGN outflow and star-forming disk kinematics in the nuclear region of NGC 7582 with JWST NIRSpec and MIRI/MRS

Oscar Veenema, Niranjan Thatte, Dimitra Rigopoulou, Ismael Garcia-Bernete, Almudena Alonso-Herrero, Miguel Pereira-Santaella, Anelise Audibert, Enrica Bellocchi, Andrew J. Bunker, Steph Campbell, Francoise Combes, Ric I. Davies, Fergus R. Donnan, Santiago Garcia-Burillo, Omaira Gonzalez Martin, Laura Hermosa Munoz, Erin K. S. Hicks, Sebastian F. Hoenig, Alvaro Labiano, Nancy A. Levenson, Chris Packham, Cristina Ramos Almeida, Claudio Ricci, Rogemar A. Riffel, David Rosario, Taro Shimizu, Lulu Zhang · 2026

We present a detailed study of the inner regions of NGC~7582, a nearby Seyfert~2 galaxy, from the Galaxy Activity, Torus and Outflow Survey (GATOS). The galaxy hosts a circumnuclear star-forming disk …

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Mathematics Preprint PDF DOI

Chemotaxis compressible Navier-Stokes equations with density-dependent viscosity modeling vascular network formation

Ansgar Jungel, Flora Philipp · 2026

The existence of global weak solutions to the compressible Navier-Stokes equations for the density of endothelial cells and their velocity, coupled to a reaction-diffusion equation for the concentrati…

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Physics Preprint PDF DOI

Torus one-point functions in critical loop models

Paul Roux, Sylvain Ribault, Jesper Lykke Jacobsen · 2026

We show that in critical loop models, torus 1-point functions can be expressed in terms of sphere 4-point functions at a different central charge. Unlike in the Moore--Seiberg formalism, crossing symm…

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Mathematics Preprint PDF DOI

Semi-Discrete Approximation of Aubry and Mather sets

Fabio Camilli, Cristian Mendico · 2026

We study the semi-discrete approximation of Aubry and Mather sets for Tonelli Lagrangians on the flat torus. Starting from the discrete Lax--Oleinik equation, we introduce natural discrete analogues o…

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Mathematics Preprint PDF DOI

The Benjamin-Ono equation with 2D control input: approximate controllability and its application

Jia-Cheng Zhao · 2026

We establish the approximate controllability in $L^2$ for the nonlinear Benjamin-Ono equation on torus via two-dimensional control input. Our proof is based on adaptations of geometric control approac…

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