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This paper describes recent progress in the analysis of relativistic gauge conditions for Euclidean Maxwell theory in the presence of boundaries. The corresponding quantum amplitudes are studied by using Faddeev-Popov formalism and…

广义相对论与量子宇宙学 · 物理学 2011-04-20 Giampiero Esposito

Uncertainty maps highlight unreliable regions in segmentation predictions. However, most uncertainty evaluation metrics treat voxels independently, ignoring spatial context and anatomical structure. As a result, they may assign identical…

计算机视觉与模式识别 · 计算机科学 2025-06-23 Tal Zeevi , Eléonore V. Lieffrig , Lawrence H. Staib , John A. Onofrey

We determine the shape which minimizes, among domains with given measure, the first eigenvalue of the anisotropic laplacian perturbed by an integral of the unknown function. Using also some properties related to the associated \lq\lq…

偏微分方程分析 · 数学 2024-10-08 Gianpaolo Piscitelli

Accurate image registration is essential in many medical imaging applications, yet most deep registration networks provide little indication of when or where their predictions are unreliable. Existing uncertainty estimation approaches, such…

计算机视觉与模式识别 · 计算机科学 2026-02-03 Lin Tian , Xiaoling Hu , Juan Eugenio Iglesias

We generally study the density of eigenvalues in unitary ensembles of random matrices from the recurrence coefficients with regularly varying conditions for the orthogonal polynomials. First we calculate directly the moments of the density.…

数学物理 · 物理学 2008-10-31 Dang-Zheng Liu , Zheng-Dong Wang , Kui-Hua Yan

We present a semi-analytical approach to compute quasi-guided elastic wave modes in horizontally layered structures radiating into unbounded fluid or solid media. This problem is of relevance, e.g., for the simulation of guided ultrasound…

数值分析 · 数学 2025-06-18 Hauke Gravenkamp , Bor Plestenjak , Daniel A. Kiefer , Elias Jarlebring

We study the effect of regular and singular domain perturbations on layer potential operators for the Laplace equation. First, we consider layer potentials supported on a diffeomorphic image $\phi(\partial\Omega)$ of a reference set…

偏微分方程分析 · 数学 2022-03-04 Matteo Dalla Riva , Paolo Luzzini , Paolo Musolino

We develop a perturbative approach for calculating, within the quasistatic approximation, the shift of surface resonances in response to a deformation of a dielectric volume. Our strategy is based on the conversion of the homogeneous system…

介观与纳米尺度物理 · 物理学 2015-05-27 Daniel Grieser , Hannes Uecker , Svend-Age Biehs , Oliver Huth , Felix Rüting , Martin Holthaus

In this paper we consider an abstract Cauchy problem for a Maxwell system modelling electromagnetic fields in the presence of an interface between optical media. The electric polarization is in general time-delayed and nonlinear, turning…

偏微分方程分析 · 数学 2023-11-21 Tomáš Dohnal , Mathias Ionescu-Tira , Marcus Waurick

The Maxwell approach from electrostatics is applied for calculation of transport coefficients in composites. The viscosity of a dilute emulsion is obtained as a function of the volume fraction of dispersed phase. The derived new formula is…

软凝聚态物质 · 物理学 2011-12-19 K. Dimitrov , B. Radoev , R. Tsekov

We derive necessary conditions for locally optimal shapes of a design problem governed by a non-smooth PDE. The main particularity of the state system is the lack of differentiability of the nonlinearity. We work in the framework of the…

最优化与控制 · 数学 2025-11-21 Livia Betz

Machine learning models have emerged as a very effective strategy to sidestep time-consuming electronic-structure calculations, enabling accurate simulations of greater size, time scale and complexity. Given the interpolative nature of…

Data-driven modeling is useful for reconstructing nonlinear dynamical systems when the underlying process is unknown or too expensive to compute. Having reliable uncertainty assessment of the forecast enables tools to be deployed to predict…

统计方法学 · 统计学 2023-11-01 Mengyang Gu , Yizi Lin , Victor Chang Lee , Diana Qiu

By studying modular invariance properties of some characteristic forms, we obtain twisted anomaly cancellation formulas. We apply these twisted cancellation formulas to study divisibilities on spin manifolds and congruences on spin$^c$…

微分几何 · 数学 2007-05-23 Qingtao Chen , Fei Han

We compute the Weyl anomaly for an abelian Wilson surface by using a regularization that respects the gauge invariance. We then study the loop space on which lives a one-form connection. We restrict ourselves to the subsector consisting of…

高能物理 - 理论 · 物理学 2010-02-03 Andreas Gustavsson

The calculation of transport profiles from experimental measurements belongs in the category of inverse problems which are known to come with issues of ill-conditioning or singularity. A reformulation of the calculation, the matricial…

等离子体物理 · 物理学 2012-06-07 D. F. Escande , F. Sattin

We investigate the occurrence of divergences in maximal supergravity in various dimensions from the point of view of supersymmetry constraints on the U-duality invariant threshold functions defining the higher derivative couplings in the…

高能物理 - 理论 · 物理学 2015-09-30 Guillaume Bossard , Axel Kleinschmidt

Online map generation and trajectory prediction are critical components of the autonomous driving perception-prediction-planning pipeline. While modern vectorized mapping models achieve high geometric accuracy, they typically treat map…

机器人学 · 计算机科学 2026-03-23 Pritom Gogoi , Faris Janjoš , Bin Yang , Andreas Look

We describe a shape derivative approach to provide a candidate for an optimal domain among non-simply connected planar domains with two boundary components. This approach is an adaptation of the work on the extremal eigenvalue problem for…

最优化与控制 · 数学 2022-10-07 Leoncio Rodriguez Quinones

For highly perforated domains the paper addresses a novel approach to study mixed boundary value problems for the equations of linear elasticity in the framework of meso-scale approximations. There are no assumptions of periodicity involved…

数学物理 · 物理学 2015-01-30 Vladimir Maz'ya , Alexander Movchan , Michael Nieves
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