On the non-local heat kernel expansion

Details On the non-local heat kernel expansion On the non-local heat kernel expansion

2012-03-09

arxiv.org/abs/1203.2034v1

Physics

Mathematical Physics

26 pages, 32 figures

Scientific paper

We propose a novel derivation of the non-local heat kernel expansion, first studied by Barvinsky, Vilkovisky and Avramidi, based on simple diagrammatic equations satisfied by the heat kernel. For Laplace-type differential operators we obtain the explicit form of the non-local heat kernel form factors to second order in the curvature. Our method can be generalized easily to the derivation of the non-local heat kernel expansion of a wide class of differential operators.

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