High order correlation functions for a self-interacting scalar field in de Sitter space

被引：31
|
作者：
Bernardeau, F [1 ]
Brunier, T
Uzan, JP
机构：
[1] CEA Saclay, CNRS, Unite Rech, CEA DSM SPhT,Serv Phys Theor, F-91191 Gif Sur Yvette, France
[2] Univ Paris 11, CNRS, UMR 8627, Phys Theor Lab, F-91405 Orsay, France
[3] CNRS, FRE 2435, Inst Astrophys, F-75014 Paris, France
来源：
PHYSICAL REVIEW D | 2004年 / 69卷 / 06期
关键词：
D O I：
10.1103/PhysRevD.69.063520
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the expressions of the three- and four-point correlation functions of a self-interacting light scalar field in a de Sitter spacetime at tree order, respectively, for a cubic and a quartic potential. Exact expressions are derived and their limiting behavior on superhorizon scales are presented. Their essential features are shown to be similar to those obtained in a classical approach.
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页数：6
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