期刊
PHYSICAL REVIEW D
卷 99, 期 10, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.99.106009
关键词
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资金
- NSF [PHY-1505411]
- Eberly research funds of Penn State
- Polish Narodowe Centrum Nauki [2018/29/B/ST2/01250]
The effective quantum dynamics of Bianchi I spacetime is addressed within the statistical regularization scheme in quantum reduced loop gravity. The case of a minimally coupled massless scalar field is studied and compared with the effective (mu) over bar -loop quantum cosmology. The dynamics provided by the two approaches match in the semiclassical limit but differ significantly after the bounces. Analytical and numerical inspections show that energy density, expansion scalar and shear are bounded also in quantum reduced loop gravity and the classical singularity is resolved for generic initial conditions in all spatial directions.
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