期刊
PHYSICAL REVIEW D
卷 84, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.064012
关键词
-
资金
- MICINN [FIS2008-06078-C03-03]
- Consolider-Ingenio program CPAN from Spain [CSD2007-00042]
- Natural Sciences and Engineering Research Council of Canada
- Minister Nauki i Szkolnictwa Wyzszego [N N202 104838]
- CSIC [JAE-Pre 08 00791]
Various prescriptions proposed in the literature to attain the polymeric quantization of a homogeneous and isotropic flat spacetime coupled to a massless scalar field are carefully analyzed in order to discuss their differences. A detailed numerical analysis confirms that, for states which are not deep in the quantum realm, the expectation values and dispersions of some natural observables of interest in cosmology are qualitatively the same for all the considered prescriptions. On the contrary, the amplitude of the wave functions of those states differs considerably at the bounce epoch for these prescriptions. This difference cannot be absorbed by a change of representation. Finally, the prescriptions with simpler superselection sectors are clearly more efficient from the numerical point of view.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据