Power counting of loop diagrams in general relativity

被引:50
作者
Donoghue, JF
Torma, T
机构
[1] University of Massachusetts, Department of Physics, Amherst, MA
来源
PHYSICAL REVIEW D | 1996年 / 54卷 / 08期
关键词
D O I
10.1103/PhysRevD.54.4963
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
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 behavior 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.
引用
收藏
页码:4963 / 4972
页数:10
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