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

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

2003-11-18

arxiv.org/abs/astro-ph/0311422v1

Phys.Rev. D69 (2004) 063520

Astronomy and Astrophysics

Astrophysics

8 pages, 4 figures

Scientific paper

10.1103/PhysRevD.69.063520

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 behaviour on super-horizon scales are presented. Their essential features are shown to be similar to those obtained in a classical approach.

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