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

D. Benisty, E. I. Guendelman, A. van de Venn, D. Vasak, J. Struckmeier, H. Stoecker

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number264
JournalEuropean Physical Journal C
Volume82
Issue number3
DOIs
StatePublished - 1 Mar 2022

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