GUP vs polymer quantum cosmology: the Taub model

Details GUP vs polymer quantum cosmology: the Taub model GUP vs polymer quantum cosmology: the Taub model

2009-03-23

arxiv.org/abs/0903.3836v1

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, to appear in the Proceedings of the 3rd Stueckelberg Workshop, July 2008, Pescara - Italy

Scientific paper

The fate of the cosmological singularity in the Taub model is discussed within the two frameworks. An internal time variable is ruled out and the only remaining degree of freedom (the anisotropy) of the Universe is quantized according to such schemes. The resulting GUP Taub Universe is singularity-free, differently from the second case, where the classical singularity is not tamed by the polymer-loop quantum effects.

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