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Diagrams for heat kernel expansions

Lookup NU author(s): Professor Ian Moss, Wade Naylor

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Abstract

A diagramatic heat kernel expansion technique is presented. The method is especially well suited to the small-derivative expansion of the heat kernel, but it can also be used to reproduce the results obtained by the approach known as covariant perturbation theory. The new technique fives an expansion for the heat kernel at coincident points. It can also be used to obtain the derivative of the heat kernel, and this is useful for evaluating the expectation values of the stress-energy tensor.


Publication metadata

Author(s): Moss IG, Naylor W

Publication type: Article

Publication status: Published

Journal: Classical and Quantum Gravity

Year: 1999

Volume: 16

Issue: 8

Pages: 2611-2624

Print publication date: 01/08/1999

ISSN (print): 0264-9381

ISSN (electronic): 1361-6382

Publisher: Institute of Physics Publishing Ltd.

URL: http://dx.doi.org/10.1088/0264-9381/16/8/304

DOI: 10.1088/0264-9381/16/8/304


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