Dust reference frame in quantum cosmology

被引：45

作者：

Husain, Viqar ^{[1
]}

Pawlowski, Tomasz ^{[1
]}

机构：

[1] Univ New Brunswick, Dept Math & Stat, Fredericton, NB E3B 5A3, Canada

来源：

CLASSICAL AND QUANTUM GRAVITY | 2011年 / 28卷 / 22期

关键词：

GRAVITY; TIME;

D O I：

10.1088/0264-9381/28/22/225014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

give a formulation of quantum cosmology with pressureless dust and arbitrary additional matter fields. The system has the property that its Hamiltonian constraint is linear in the dust momentum. This feature provides a natural time gauge, leading to a physical Hamiltonian that is not a square root. Quantization leads to a Schrodinger equation for which unitary evolution is directly linked to geodesic completeness. Our approach simplifies the analysis of both Wheeler-deWitt and loop quantum cosmology (LQC) models and significantly broadens the applicability of the latter. This is demonstrated for arbitrary scalar field potential and cosmological constant in LQC.

引用

页数：8

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