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Heat Kernel Expansion for Semitransparent Boundaries

M. Bordag, D. V. Vassilevich

hep-tharXiv:hep-th/9907076

Abstract

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

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