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This paper introduces a boundary integral equation for time-harmonic electromagnetic scattering by composite dielectric objects. The formulation extends the classical M\"uller equation to composite structures through the global multi-trace…

数值分析 · 数学 2026-01-21 Van Chien Le , Kristof Cools

We derive the trace and diffeomorphism anomalies of the Schr\"odinger field minimally coupled to the Newton-Cartan background using Fujikawa's path integral approach. This approach in particular enables us to calculate the one-loop…

广义相对论与量子宇宙学 · 物理学 2017-10-13 Karan Fernandes , Arpita Mitra

We establish large sample approximations for an arbitray number of bilinear forms of the sample variance-covariance matrix of a high-dimensional vector time series using $ \ell_1$-bounded and small $\ell_2$-bounded weighting vectors.…

概率论 · 数学 2020-09-01 Ansgar Steland , Rainer von Sachs

We study linearly edge-reinforced random walks on $\mathbb{Z}_+$, where each edge $\{x,x+1\}$ has the initial weight $x^{\alpha} \vee 1$, and each time an edge is traversed, its weight is increased by $\Delta$. It is known that the walk is…

概率论 · 数学 2020-07-28 Masato Takei

The flow equation method was proposed by Wegner as a technique for studying interacting systems in one dimension. Here, we apply this method to a disordered one dimensional model with power-law decaying hoppings. This model presents a…

无序系统与神经网络 · 物理学 2016-09-21 Victor L. Quito , Paraj Titum , David Pekker , Gil Refael

Loewner chains with Levy drivers have been proposed as models for random dendritic growth in two dimensions, and as candidates for finding extremal multifractal spectra in problems in classical function theory. These processes are not…

概率论 · 数学 2025-10-20 Eveliina Peltola , Anne Schreuder

We study the formation of singularities for the Euler-Alignment system with influence function $\psi=\frac{k_\alpha}{|x|^\alpha}$ in 1D. As in [20] the problem is reduced to the analysis of a nonlocal 1D equation. We show the existence of…

偏微分方程分析 · 数学 2019-11-21 Victor Arnaiz , Ángel Castro

The main object considered in this paper is the trace function, defined as a suitably normalized trace of a product of intertwining operators for the Drinfeld-Jimbo quantum group, multiplied by the exponential of an element of the Cartan…

量子代数 · 数学 2007-05-23 Pavel Etingof , Alexander Varchenko

In this paper we prove the uniqueness and stability in determining a time-dependent nonlinear coefficient $\beta(t, x)$ in the Schr\"odinger equation $(i\partial_t + \Delta + q(t, x))u + \beta u^2 = 0$, from the boundary…

偏微分方程分析 · 数学 2023-11-07 Ru-Yu Lai , Xuezhu Lu , Ting Zhou

I present an overview of the methods involved in the computation of the scalar, electromagnetic, and gravitational self-forces acting on a point particle moving in a curved spacetime. For simplicity, the focus here will be on the scalar…

广义相对论与量子宇宙学 · 物理学 2009-09-17 Eric Poisson

We consider a one dimensional asymmetric random walk whose jumps are identical, independent and drawn from a distribution \phi(\eta) displaying asymmetric power law tails (i.e. \phi(\eta) \sim c/\eta^{\alpha +1} for large positive jumps and…

统计力学 · 物理学 2014-02-24 Clélia de Mulatier , Alberto Rosso , Gregory Schehr

We derive the variational formula of the Loewner driving function of a simple chord under infinitesimal quasiconformal deformations with Beltrami coefficients supported away from the chord. As an application, we obtain the first variation…

复变函数 · 数学 2024-03-06 Jinwoo Sung , Yilin Wang

Analytic solutions to the time-dependent Schr\"odinger equation for cutoff wave initial conditions are used to investigate the time evolution of the transmitted probability density for tunneling. For a broad range of values of the potential…

量子物理 · 物理学 2009-11-07 Gaston Garcia-Calderon , Jorge Villavicencio

The forcing relation of braids has been introduced for a 2-dimensional analogue of the Sharkovskii order on periods for maps of the interval. In this paper, by making use of the Nielsen fixed point theory and a representation of braid…

动力系统 · 数学 2008-04-23 Boju Jiang , Hao Zheng

An inhomogeneous (1+1)-dimensional model of the quantum gravity is considered. It is found, that this model corresponds to a string propagating against some curved background space. The quantization scheme including the Wheeler-DeWitt…

广义相对论与量子宇宙学 · 物理学 2015-05-28 S. L. Cherkas , V. L. Kalashnikov

This paper introduces the concept of Fractal Frenet equations, a set of differential equations used to describe the behavior of vectors along fractal curves. The study explores the analogue of arc length for fractal curves, providing a…

We consider the case of scattering by several obstacles in $\mathbb{R}^d$ for $d \geq 2$. We establish a relative trace formula for Neumann and transmission boundary conditions analogous to the one obtained in arXiv:2002.07291 for Dirichlet…

数学物理 · 物理学 2026-05-21 Arne Hofmann , Alexander Strohmaier

The Loewner equation, in its stochastic incarnation introduced by Schramm, is an insightful method for the description of critical random curves and interfaces in two-dimensional statistical mechanics. Two features are crucial, namely…

统计力学 · 物理学 2015-06-16 Marco Gherardi , Alessandro Nigro

In this paper we consider the discrete Allen-Cahn equation posed on a two-dimensional rectangular lattice. We analyze the large-time behaviour of solutions that start as bounded perturbations to the well-known planar front solution that…

动力系统 · 数学 2019-11-11 Mia Jukić , Hermen Jan Hupkes

Paying attention to conformal invariance as the invariance under local transformations of units of measure, we take a conformal invariant quantum field as a quantum matter theory in which one has the freedom to choose the values of units of…

广义相对论与量子宇宙学 · 物理学 2017-05-17 Nadereh Namavarian