PARTICLE-PRODUCTION IN DE SITTER SPACE

被引：36

作者：

BISWAS, S

GUHA, J

SARKAR, NG

机构：

[1] Department of Physics, University of Kalyani

来源：

CLASSICAL AND QUANTUM GRAVITY | 1995年 / 12卷 / 07期

关键词：

D O I：

10.1088/0264-9381/12/7/005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Partial creation in de Sitter spacetime is studied in a complex-time WKB approximation. It is found that the particle production parallels the description of particle creation by a collapsing spherical body. The appropriate vacuum for an inflationary early universe is the Hartle-Hawking vacuum; this is also a general feature of expanding spacetimes. The effect of particle production back on the metric is treated in a way that differs from the standard semiclassical approach.

引用

页码：1591 / 1607

页数：17

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