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
收藏
页码：2815 / 2823
页数：9
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