Dirac observables and boundary proposals in quantum cosmology

被引：11

作者：

Jalalzadeh, S. ^{[1
]}

Moniz, P. V. ^{[2
]}

机构：

[1] Shahid Beheshti Univ, Dept Phys, GC, Tehran 19839, Iran

[2] Univ Beira Interior, Dept Fis, Ctr Matemat & Aplicacoes, P-6200 Covilha, Portugal

来源：

PHYSICAL REVIEW D | 2014年 / 89卷 / 08期

关键词：

TIME; QUANTIZATION; SELECTION; CREATION; GRAVITY; DUST;

D O I：

10.1103/PhysRevD.89.083504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the reduced phase space quantization of a closed Friedmann universe, where matter content is constituted by two (noninteracting) fluids, namely dust (or cold dark matter) and radiation. It is shown that, for this particular model, specific boundary conditions can be related to the algebra of Dirac observables.

引用

页数：6

共 57 条

[1]

Acacio de Barros J., 1998, PHYS LETT A, V241, P229

[2] Problem of time in quantum gravity [J].