Quantum contributions to cosmological correlations. II. Can these corrections become large?

被引：199

作者：

Weinberg, Steven ^{[1
]}

机构：

[1] Univ Texas, Dept Phys, Theory Grp, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW D | 2006年 / 74卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevD.74.023508

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

This is a sequel to a previous detailed study of quantum corrections to cosmological correlations. It was found there that except in special cases these corrections depend on the whole history of inflation, not just on the behavior of fields at horizon exit. It is shown here that at least in perturbation theory these corrections can nevertheless not be proportional to positive powers of the Robertson-Walker scale factor, but only at most to powers of its logarithm, and are therefore never large.

引用

页数：5

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