Heisenberg-picture approach to the evolution of the scalar fields in an expanding universe

被引：21
作者：
Cho, KH
Ji, JY
Kim, SP
Lee, CH
Ryu, JY
机构：
[1] SEOUL NATL UNIV, DEPT EDUC PHYS, SEOUL 151742, SOUTH KOREA
[2] KUNSAN NATL UNIV, DEPT PHYS, KUNSAN 573701, SOUTH KOREA
[3] HANYANG UNIV, DEPT PHYS, SEOUL 133791, SOUTH KOREA
来源：
PHYSICAL REVIEW D | 1997年 / 56卷 / 08期
关键词：
D O I：
10.1103/PhysRevD.56.4916
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present the Heisenberg-picture approach to the quantum evolution of the scalar fields in an expanding Friedmann-Robertson-Walker universe which incorporates relatively simply the initial quantum conditions such as the vacuum state, the thermal equilibrium state, and the coherent state. We calculate the Wightman function, two-point function, and correlation function of a massive scalar field. We find the quantum evolution of fluctuations of a self-interacting field perturbatively and discuss the renormalization of field equations. [S0556-2821(97)06018-9]. PACS number(s): 04.62.+v.
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收藏
页码：4916 / 4921
页数：6
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