On the power counting of loop diagrams in general relativity

Details On the power counting of loop diagrams in general relativity On the power counting of loop diagrams in general relativity

1996-02-22

arxiv.org/abs/hep-th/9602121v1

Phys.Rev. D54 (1996) 4963-4972

Physics

High Energy Physics

High Energy Physics - Theory

29 pages, uses axodraw and epsfig.tex, one small .eps file is included. The full PostScript version is also available as htt

Scientific paper

10.1103/PhysRevD.54.4963

A class of loop diagrams in general relativity appears to have a behavior which would upset the utility of the energy expansion for quantum effects. We show through the study of specific diagrams that cancellations occur which restore the expected behaviour of the energy expansion. By considering the power counting in a physical gauge we show that the apparent bad behavior is a gauge artifact, and that the quantum loops enter with a well behaved energy expansion.

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