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arXiv · 1603.00446

Covariant perturbation expansion of off-diagonal heat kernel

Yu-Zi Gou·Wen-Du Li·Ping Zhang·Wu-Sheng Dai
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Abstract

Covariant perturbation expansion is an important method in quantum field theory. In this paper an expansion up to arbitrary order for off-diagonal heat kernels in flat space based on the covariant perturbation expansion is given. In literature, only diagonal heat kernels are calculated based on the covariant perturbation expansion.

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Yu-Zi Gou, Wen-Du Li, Ping Zhang, Wu-Sheng Dai. 2016-02-28. Covariant perturbation expansion of off-diagonal heat kernel. https://doi.org/10.1007/s10773-016-2968-0

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