CLASSICAL PERTURBATIONS FROM DECOHERENCE OF QUANTUM FLUCTUATIONS IN THE INFLATIONARY UNIVERSE

被引：5

作者：

BRANDENBERGER, R

LAFLAMME, R

MIJIC, M

机构：

[1] UNIV BRITISH COLUMBIA,DEPT PHYS,VANCOUVER V6T 2A6,BC,CANADA

[2] SCUOLA INT SUPER STUDI AVANZATI,I-34014 TRIESTE,ITALY

来源：

PHYSICA SCRIPTA | 1991年 / T36卷

关键词：

D O I：

10.1088/0031-8949/1991/T36/029

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The evolution of a scalar field interacting with an environment in the de Sitter phase of an inflationary Universe is studied. The environment is taken to be a second scalar field. It is shown that the coherence length of the quantum fluctuations rapidly decreses after the wavelength of the perturbation crosses the Hubble radius. Hence, the fluctuations can be interpreted as classical. This lends support to the usual derivation of the spectrum of density perturbations in inflationary Universe models.

引用

页码：265 / 268

页数：4

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