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We study heat semigroups generated by self-adjoint Laplace operators on metric graphs characterized by the property that the local scattering matrices associated with each vertex of the graph are independent from the spectral parameter. For…

Mathematical Physics · Physics 2008-02-05 Vadim Kostrykin , Jurgen Potthoff , Robert Schrader

We study a "div-grad type" sub-Laplacian with respect to a smooth measure and its associated heat semigroup on a compact equiregular sub-Riemannian manifold. We prove a short time asymptotic expansion of the heat trace up to any order. Our…

Differential Geometry · Mathematics 2020-04-15 Yuzuru Inahama , Setsuo Taniguchi

Given a cone pseudodifferential operator $P$ we give a full asymptotic expansion as $t\to 0^+$ of the trace $\Tr Pe^{-tA}$, where $A$ is an elliptic cone differential operator for which the resolvent exists on a suitable region of the…

Spectral Theory · Mathematics 2023-10-24 Juan B. Gil , Paul A. Loya

Asymptotic expansions of heat kernels and heat traces of Schr\"odinger operators on non-compact spaces are rarely explored, and even for cases as simple as $\mathbb{C}^n$ with (quasi-homogeneous) polynomials potentials, it's already very…

Differential Geometry · Mathematics 2020-11-12 Xianzhe Dai , Junrong Yan

We study the asymptotics of iterates of the transfer operator for non-uniformly hyperbolic $\alpha$-Farey maps. We provide a family of observables which are Riemann integrable, locally constant and of bounded variation, and for which the…

Dynamical Systems · Mathematics 2017-10-24 Johannes Kautzsch , Marc Kesseböhmer , Tony Samuel , Bernd O. Stratmann

We explicitly determine the high-energy asymptotics for Weyl-Titchmarsh matrices associated with general Dirac-type operators on half-lines and on $\bbR$. We also prove new local uniqueness results for Dirac-type operators in terms of…

Spectral Theory · Mathematics 2007-05-23 Steve Clark , Fritz Gesztesy

We describe the large-time asymptotics of solutions to the heat equation for the fractional Laplacian with added subcritical or even critical Hardy-type potential. The asymptotics is governed by a self-similar solution of the equation,…

Analysis of PDEs · Mathematics 2023-04-28 Krzysztof Bogdan , Tomasz Jakubowski , Panki Kim , Dominika Pilarczyk

We analyze the extension of the well known relation between Brownian motion and Schroedinger equation to the family of Levy processes. We consider a Levy-Schroedinger equation where the usual kinetic energy operator - the Laplacian - is…

Statistical Mechanics · Physics 2014-09-01 Nicola Cufaro Petroni , Modesto Pusterla

The operator $e^{-tA}$ and its trace are investigated in the case when $A$ is a non-self-adjoint elliptic differential operator on a manifold with conical singularities. Under a certain spectral condition (parameter-ellipticity) we obtain a…

Analysis of PDEs · Mathematics 2023-10-24 Juan B. Gil

An asymptotic equality of the form $\operatorname{Tr}_{L^2} e^{-t(L+V)}=Ct^{-\alpha}+o(t^{-\alpha})$ as $t\rightarrow 0$ is given for the trace of the heat semigroup generated by operators on compact manifolds of the form…

Spectral Theory · Mathematics 2013-11-01 Andrew L. Ursitti

In this paper we study some applications of the L\'evy logarithmic Sobolev inequality to the study of the regularity of the solution of the fractal heat equation, i. e. the heat equation where the Laplacian is replaced with the fractional…

Probability · Mathematics 2010-04-29 Ivan Gentil , Cyril Imbert

We discuss the heat content asymptotics associated with the heat flow out of a smooth compact manifold in a larger compact Riemannian manifold. Although there are no boundary conditions, the corresponding heat content asymptotics involve…

Analysis of PDEs · Mathematics 2013-06-27 M. van den Berg , P. Gilkey

In this paper, we study the asymptotic behavior, as the time $t$ goes to zero, of the trace of the semigroup of a killed relativistic $\alpha$-stable process in bounded $C^{1,1}$ open sets and bounded Lipschitz open sets. More precisely, we…

Probability · Mathematics 2012-12-17 Hyunchul Park , Renming Song

Heat-invariants are a class of spectral invariants of Laplace-type operators on compact Riemannian manifolds that contain information about the geometry of the manifold, e.g., the metric and connection. Since Brownian motion solves the heat…

Operator Algebras · Mathematics 2018-02-01 Jason Hancox , Tobias Hartung

We prove a bound on the heat trace of the Neumann Laplacian on a convex domain that captures the first two terms in its small-time expansion, but is valid for all times and depends on the underlying domain only through very simple geometric…

Analysis of PDEs · Mathematics 2026-01-13 Rupert L. Frank , Simon Larson

Let $\Omega$ be a $C^\infty$-smooth bounded domain of $\mathbb{R}^n$, $n \geq 1$, and let the matrix ${\bf a} \in C^\infty (\overline{\Omega};\R^{n^2})$ be symmetric and uniformly elliptic. We consider the $L^2(\Omega)$-realization $A$ of…

Analysis of PDEs · Mathematics 2013-12-12 Mourad Choulli , Laurent Kayser , Yavar Kian , Eric Soccorsi

We consider non-smooth functions of (truncated) Wiener--Hopf type operators on the Hilbert space $L^2(\mathbb R^d)$. Our main results are uniform estimates for trace norms ($d\ge 1$) and quasiclassical asymptotic formulas for traces of the…

Spectral Theory · Mathematics 2022-01-27 Hajo Leschke , Alexander V. Sobolev , Wolfgang Spitzer

Continuing the series of works following Weyl's one-term asymptotic formula for the counting function $N(\lambda)=\sum_{n=1}^\infty(\lambda_n{-}\lambda)_-$ of the eigenvalues of the Dirichlet Laplacian and the much later found two-term…

Spectral Theory · Mathematics 2018-08-07 Sebastian Gottwald

We prove Szeg\H{o}-type trace asymptotics for translation-invariant operators on polygons. More precisely, consider a Fourier multiplier $A=\mathcal{F}^\ast \sigma \mathcal{F}$ on $\mathsf{L}^2(\mathbb{R}^2)$ with a sufficiently decaying,…

Spectral Theory · Mathematics 2018-07-13 Bernhard Pfirsch

We explicitly construct parametrices for magnetic Schr\"odinger operators on R^d and prove that they provide a complete small-t expansion for the corresponding heat kernel, both on and off the diagonal.

Mathematical Physics · Physics 2014-02-19 Jens Bolte , Stefan Keppeler