Bianchi I effective dynamics in Quantum Reduced Loop Gravity
General Relativity and Quantum Cosmology
2019-05-29 v1
Abstract
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 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.
Cite
@article{arxiv.1901.07140,
title = {Bianchi I effective dynamics in Quantum Reduced Loop Gravity},
author = {Emanuele Alesci and Gioele Botta and Giovanni Luzi and Gabriele V. Stagno},
journal= {arXiv preprint arXiv:1901.07140},
year = {2019}
}
Comments
19 pages, 23 figures, 1 table