Renormalization group flow and symmetry restoration in de Sitter space

被引：45

作者：

Serreau, J. ^{[1
]}

机构：

[1] Univ Paris Diderot, CNRS, IN2P3, CEA,Irfu,Observ Paris,Sorbonne Paris Cite,APC, F-75205 Paris 13, France

来源：

PHYSICS LETTERS B | 2014年 / 730卷

关键词：

Quantum field theory in de Sitter space; Infrared effects; Nonperturbative renormalization group; QUANTUM-FIELD-THEORY; INFLATION; BREAKING; ABSENCE;

D O I：

10.1016/j.physletb.2014.01.058

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We compute the renormalization group flow of O(N) scalar field theories in de Sitter space using nonperturbative renormalization group techniques in the local potential approximation. We obtain the flow of the effective potential on superhorizon scales for arbitrary space-time dimension D = d+1. We show that, due to strong infrared fluctuations, the latter is qualitatively similar to the corresponding one in Euclidean space R-D with D = 0. It follows that spontaneously broken symmetries are radiatively restored in any space-time dimension and for any value of N. (C) 2014 The Author. Published by Elsevier B.V.

引用

页码：271 / 274

页数：4

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