量子引力的曲率两点真空相关

Curvature vacuum correlations in quantum gravity

以平坦的Minkowski时空为背景 ,得到了任意坐标系和谐和坐标系中 ,n维GR引力和高导数引力的引力子自由传播子 ,求得了四种可能的曲率两点真空相关函数的首项 .用微扰计算证明了曲率的两点真空相关函数在GR引力中为零 ,而在高导数引力中不为零 .讨论了高导数引力与GR的引力子传播子。

Under the flat Minkowski space-time background,in the harmonic and the arbitrary coordinate systems,we obtained the graviton free propagators in the n-dimensional general relativity (GR) and the high derivative gravity respectively,calculated the expressions of the leading terms of several two-point curvature vacuum correlation functions,and proved that they are zero in the GR,but in the high derivative gravity they are not zero.