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Let $P$ be an operator of Dirac type on a compact Riemannian manifold with smooth boundary. We impose spectral boundary conditions and study the asymptotics of the heat trace of the associated operator of Laplace type.

High Energy Physics - Theory · Physics 2007-05-23 Stuart Dowker , Peter Gilkey , Klaus Kirsten

Let $P$ be an operator of Dirac type on a compact Riemannian manifold with smooth boundary. We impose spectral boundary conditions and study the asymptotics of the heat trace of the associated operator of Laplace type.

Mathematical Physics · Physics 2007-05-23 P. B. Gilkey , K. Kirsten

The heat trace asymptotics are discussed for operators of Laplace type with Dirichlet, Robin, spectral, D/N, and transmittal boundary conditions. The heat content asymptotics are discussed for operators with time dependent coefficients and…

Mathematical Physics · Physics 2009-11-07 Peter B. Gilkey , Klaus Kirsten , JeongHyeong Park , Dmitri Vassilevich

The existence of a full asymptotic expansion for the heat content asymptotics of an operator of Laplace type with classical Zaremba boundary conditions on a smooth manifold is established. The first three coefficients in this asymptotic…

Mathematical Physics · Physics 2008-11-26 M. van den Berg , P. Gilkey , K. Kirsten , V. A. Kozlov

We present examples of isospectral operators that do not have the same heat content. Several of these examples are planar polygons that are isospectral for the Laplace operator with Dirichlet boundary conditions. These include examples with…

Spectral Theory · Mathematics 2017-05-17 M. van den Berg , E. B. Dryden , T. Kappeler

Let (M,g) be a compact Riemannian manifold without boundary. Let D be a compact subdomain of M with smooth boundary. We examine the heat content asymptotics for the heat flow from D into M where both the initial temperature and the specific…

Analysis of PDEs · Mathematics 2014-01-27 M. van den Berg , P. Gilkey

Spectral boundary conditions for Laplace-type operators, of interest in string and brane theory, are partly Dirichlet, partly Neumann-type conditions, partitioned by a pseudodifferential projection. We give sufficient conditions for…

Analysis of PDEs · Mathematics 2009-11-10 Gerd Grubb

We study the short time heat content asymptotics for spectral boundary conditions. The heat content coefficients are shown to be non-local and some preliminary results concerning the structure of the first few terms are given.

Mathematical Physics · Physics 2007-05-23 Peter Gilkey , Klaus Kirsten , JeongHyeong Park

We calculate the coefficient $a_5$ of the heat kernel asymptotics for an operator of Laplace type with mixed boundary conditions on a general compact manifold.

High Energy Physics - Theory · Physics 2009-10-31 T. P. Branson , P. B. Gilkey , K. Kirsten , D. V. Vassilevich

We study the weighted heat trace asymptotics of an operator of Laplace type with Dirichlet boundary conditions where the weight function exhibits radial blowup. We give formulas for the first few terms in the expansion in terms of…

Analysis of PDEs · Mathematics 2008-11-03 M. van den Berg , P. Gilkey , K. Kirsten , R. Seeley

We compute the first 5 terms in the short-time heat trace asymptotics expansion for an operator of Laplace type with transfer boundary conditions using the functorial properties of these invariants.

High Energy Physics - Theory · Physics 2007-05-23 Peter Gilkey , Klaus Kirsten , Dmitri Vassilevich

We study the heat kernel asymptotics for the Laplace type differential operators on vector bundles over Riemannian manifolds. In particular this includes the case of the Laplacians acting on differential p-forms. We extend our results…

Differential Geometry · Mathematics 2007-05-23 Iosif Polterovich

We study the weighted heat trace asymptotics of an operator of Laplace type with mixed boundary conditions where the weight function exhibits radial blowup. We give formulas for the first three boundary terms in the expansion in terms of…

Analysis of PDEs · Mathematics 2010-06-30 Michiel van den Berg , Peter Gilkey , Klaus Kirsten

We study the fifth term in the asymptotic expansion of the heat operator trace for a partial differential operator of Laplace type on a compact Riemannian manifold with Dirichlet or Neumann boundary conditions.

High Energy Physics - Theory · Physics 2008-11-26 Thomas P. Branson , Peter B. Gilkey , Dmitri V. Vassilevich

This paper deals with the heat equation posed in a bounded regular domain coupled with a dynamical boundary condition of reactive-diffusive type, involving the Laplace-Beltrami operator. We prove well-posedness of the problem together with…

Analysis of PDEs · Mathematics 2016-01-28 Juan Luis Vázquez , Enzo Vitillaro

We study the asymptotics of the heat trace $\Tr\{fPe^{-tP^2}\}$ where $P$ is an operator of Dirac type, where $f$ is an auxiliary smooth smearing function which is used to localize the problem, and where we impose spectral boundary…

Mathematical Physics · Physics 2009-11-10 P. Gilkey , K. Kirsten , J. H. Park

We study the spectral geometry of an operator of Laplace type on a manifold with a singular surface. We calculate several first coefficients of the heat kernel expansion. These coefficients are responsible for divergences and conformal…

High Energy Physics - Theory · Physics 2009-11-07 P. B. Gilkey , K. Kirsten , D. V. Vassilevich

We study the heat kernel for an operator of Laplace type with a $\delta$-function potential concentrated on a closed surface. We derive the general form of the small $t$ asymptotics and calculate explicitly several first heat kernel…

High Energy Physics - Theory · Physics 2008-11-26 M. Bordag , D. V. Vassilevich

We study the heat content asymptotics on a Riemannian manifold with smoooth boundary defined by Dirichlet, Neumann, transmittal and transmission boundary conditions.

Mathematical Physics · Physics 2007-05-23 Peter Gilkey , Klaus Kirsten

In this paper we compute the coefficients of the heat kernel asymptotic expansion for Laplace operators acting on scalar functions defined on the so called spherical suspension (or Riemann cap) subjected to Dirichlet boundary conditions. By…

Mathematical Physics · Physics 2012-08-21 Guglielmo Fucci , Klaus Kirsten
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