REAL OR IMAGINARY? ON PAIR CREATION IN DE SITTER SPACE

被引：40

作者：

Akhmedov, Emil T. ^{[1
]}

机构：

[1] ITEP, Moscow 117218, Russia

来源：

MODERN PHYSICS LETTERS A | 2010年 / 25卷 / 33期

关键词：

de Sitter space; Gibbons-Hawking pair production; strong gravitational fields; PERTURBATIVE QUANTUM-GRAVITY; DESITTER SPACE; PARTICLE CREATION; FIELD-THEORY; INFLATION; VACUUM; ENERGY;

D O I：

10.1142/S0217732310034043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Using properly defined Feynman propagator we obtain nonzero imaginary contribution to the scalar field effective action in even-dimensional de Sitter space. Such a propagator follows from the path integral in de Sitter space and obeys composition principle proposed in arXiv:0709.2899. The obtained expression for the effective action shows particle production with the Gibbons Hawking rate.

引用

页码：2815 / 2823

页数：9

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