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

Abstract

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.

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

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Cited by in corpus (7)

• Cosmology with torsion: An alternative to cosmic inflation
• Dynamic wormhole solutions in Einstein-Cartan gravity
• Stability of the Einstein static Universe in Einstein-Cartan-Brans-Dicke gravity
• Gravitational Collapse without Singularity Formation in Brans-Dicke Theory
• Effect of Torsion on Neutron Star Structure in Einstein-Cartan Gravity
• Gravitational Slip parameter and Gravitational Waves in Einstein-Cartan theory
• Consistent solution of Einstein-Cartan equations with torsion outside matter