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