Heat Kernel Expansion for Semitransparent Boundaries
classification
✦ hep-th
keywords
heatkernelasymptoticsboundariescalculateclosedcoefficientsconcentrated
read the original abstract
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 coefficients.
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