Quantum cosmological perfect fluid models

被引：144

作者：

Alvarenga, FG ^{[1
]}

Fabris, JC

Lemos, NA

Monerat, GA

机构：

[1] Univ Fed Espirito Santo, Dept Fis, BR-29060900 Vitoria, Espirito Santo, Brazil

[2] Univ Fed Fluminense, Dept Fis, BR-24210340 Rio De Janeiro, Brazil

来源：

GENERAL RELATIVITY AND GRAVITATION | 2002年 / 34卷 / 05期

关键词：

Wheeler-DeWitt equation; Friedmann models;

D O I：

10.1023/A:1015986011295

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Perfect fluid Friedmann-Robertson-Walker quantum cosmological models for an arbitrary barotropic equation of state p = alpharho are constructed using Schutz's variational formalism. In this approach the notion of time can be recovered. By superposition of stationary states, finite-norm wave-packet solutions to the Wheeler-DeWitt equation are found. The behaviour of the scale factor is studied by applying the many-worlds and the ontological interpretations of quantum mechanics. Singularity-free models are obtained for alpha < 1. Accelerated expansion at present requires -1/3 > alpha > - 1.

引用

页码：651 / 663

页数：13

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