On the torsion effects of a relativistic spin fluid in early cosmology

Details On the torsion effects of a relativistic spin fluid in early cosmology On the torsion effects of a relativistic spin fluid in early cosmology

2009-02-23

arxiv.org/abs/0902.4025v2

Class.Quant.Grav.26:175015,2009

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX file, 15 pages, 2 figures. This is the published version, with some new and updated references, together with small impr

Scientific paper

10.1088/0264-9381/26/17/175015

In this work we investigate the effects of torsion in the framework of Einstein-Cartan theory in early cosmology. We study solutions for a homogeneous and isotropic relativistic Weyssenhoff spin fluid with dynamical timelike axial current, also homogeneous and isotropic. The general solutions can mostly be described by means of three particular solutions. The properties of these solutions (such as singularity avoidance and primordial or late accelerated expansion) are analysed and depend on the relations between the source parameters.

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