Chiral fermions and torsion in the early Universe

Dolan, Brian P. (2009) Chiral fermions and torsion in the early Universe. Classical and Quantum Gravity, 27 (9). 095010. ISSN 0264-9381

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Official URL: http://doi.org/10.1088/0264-9381/27/9/095010

Abstract

Torsion arising from fermionic matter in the Einstein-Cartan formulation of general relativity is considered in the context of Robertson-Walker geometries and the early Universe. An ambiguity in the way torsion arising from hot fermionic matter in chiral models should be implemented is highlighted and discussed. In one interpretation, the non-zero torsion present in chiral models gives a negative contribution to the energy density which ameliorates the Big Bang singularity or even, in extreme cases, eliminates it completely giving bounce solutions for early Universe cosmology.

Item Type: Article
Divisions: School of Theoretical Physics > Preprints
Date Deposited: 05 Oct 2017 19:19
Last Modified: 13 Jul 2018 11:03
URI: http://dair.dias.ie/id/eprint/245

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