Minisuperspace dynamics in a generalized uncertainty principle framework

Details Minisuperspace dynamics in a generalized uncertainty principle framework Minisuperspace dynamics in a generalized uncertainty principle framework

2007-09-28

arxiv.org/abs/0709.4610v2

AIPConf.Proc.966:219-226,2008

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, 4 figures; to appear in the proceedings of the 4th Italian-Sino Workshop on Relativistic Astrophysics, AIP Conference

Scientific paper

10.1063/1.2836998

The minisuperspace dynamics of the Friedmann-Robertson-Walker (FRW) and of the Taub Universes in the context of a Generalized Uncertainty Principle is analyzed in detail. In particular, the motion of the wave packets is investigated and, in both the models, the classical singularity appear to be probabilistic suppressed. Moreover, the FRW wave packets approach the Planckian region in a stationary way and no evidences for a Big-Bounce, as predicted in Loop Quantum Cosmology, appear. On the other hand, the Taub wave packets provide the right behavior in predicting an isotropic Universe.

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