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The dark side of the torsion: dark energy from propagating torsion

Published version
Peer-reviewed

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Authors

Benisty, D 
Guendelman, EI 
van de Venn, A 
Vasak, D 
Struckmeier, J 

Abstract

An extension to the Einstein-Cartan (EC) action is discussed in terms of cosmological solutions. The torsion incorporated in the EC Lagrangian is assumed to be totally anti-symmetric, represented by a time-like axial vector Sμ. The dynamics of torsion is invoked by a novel kinetic term. Here we show that this kinetic term gives rise to dark energy, while the quadratic torsion term, emanating from the EC part, represents a stiff fluid that leads to a bouncing cosmology solution. A constraint on the bouncing solution is calculated using cosmological data from different epochs.

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Keywords

astro-ph.CO, astro-ph.CO, gr-qc, hep-ph

Journal Title

EUROPEAN PHYSICAL JOURNAL C

Conference Name

Journal ISSN

1434-6044
1434-6052

Volume Title

82

Publisher

Springer Science and Business Media LLC