Quantum-invariant theory and the evolution of a quantum scalar field in Robertson-Walker flat spacetimes

被引：47

作者：

Gao, XC ^{[1
]}

Gao, J ^{[1
]}

Qian, TZ ^{[1
]}

Xu, JB ^{[1
]}

机构：

[1] ZHEJIANG UNIV,DEPT PHYS,HANGZHOU 310027,PEOPLES R CHINA

来源：

PHYSICAL REVIEW D | 1996年 / 53卷 / 08期

关键词：

D O I：

10.1103/PhysRevD.53.4374

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

On the basis of the generalized invariant formulation, the invariant-related unitary transformation method is developed and used to study the evolution of a quantum scalar field in Robertson-Walker flat spacetimes. We first solve the functional Schrodinger equation for a free scalar field and obtain the exact solutions, of which the ground-state solution possesses isotropy and homogeneity automatically. We then investigate a way of extending the method to treat the case in which there is a high-order perturbative self-interaction.

引用

页码：4374 / 4381

页数：8

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