Interacting quantum field theory in de Sitter vacua

被引：82

作者：

Einhorn, MB ^{[1
]}

Larsen, F ^{[1
]}

机构：

[1] Univ Michigan, Randall Lab Phys, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 02期

关键词：

D O I：

10.1103/PhysRevD.67.024001

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss interacting quantum field theory in de Sitter space and argue that the Mottola-Allen (MA) vacuum ambiguity is an artifact of free field theory. The nature of the nonthermality of the MA vacua is also clarified. We propose analyticity of correlation functions as a fundamental requirement of quantum field theory in curved spacetimes. In de Sitter space, this principle determines the vacuum unambiguously and facilitates the systematic development of perturbation theory.

引用

页数：13

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