DISSIPATIVE EFFECTS DURING THE OSCILLATIONS AROUND A TRUE VACUUM

被引:50
作者
PAZ, JP
机构
[1] On leave from Instituto de Astronomia y Fisica del Espacio CC 67, Suc 28
来源
PHYSICAL REVIEW D | 1990年 / 42卷 / 02期
关键词
D O I
10.1103/PhysRevD.42.529
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Using functional techniques (the closed-time-path formalism) we derive a systematic way of computing the dynamical operator for the fluctuations of the mean value around a stable configuration. The equations are real and causal and contain some dissipative terms. We examine the effects predicted by them for a 4 theory in the one- and two-loop approximations. We estimate the time needed for the damping of the oscillations around a zero and a nonzero mean value (the dominant processes are different in these two cases). We discuss some conceptual issues about the nature of this dissipative process. © 1990 The American Physical Society.
引用
收藏
页码:529 / 542
页数:14
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