SELF-CONSISTENT SOLUTIONS OF THE SEMICLASSICAL BACK-REACTION EQUATIONS WITH COSMOLOGICAL CONSTANT SPATIAL CURVATURE AND PERFECT FLUID

被引：1
|
作者：
CHIMENTO, LP
ZUCCALA, NA
机构：
[1] Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires
来源：
ASTROPHYSICS AND SPACE SCIENCE | 1994年 / 215卷 / 02期
关键词：
D O I：
10.1007/BF00660080
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Exact solutions of the semi-classical Einstein equations with cosmological constant for conformally invariant free quantum fields in a general Robertson-Walker metric are found when a classical perfect fluid is present. There exist a one-parameter family of time-symmetric bouncing solutions that avoid the singularity and a one-parameter family which does not have particles horizons. The de Sitter solution is found to be stable, while the Einstein universe is unstable.
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页码：229 / 236
页数：8
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