Regular Article - Theoretical Physics
The dark side of the torsion: dark energy from propagating torsion
Frankfurt Institute for Advanced Studies (FIAS), Ruth-Moufang-Strasse 1, 60438, Frankfurt am Main, Germany
2 DAMTP, Centre for Mathematical Sciences, University of Cambridge, Wilberforce Road, CB3 0WA, Cambridge, UK
3 Kavli Institute of Cosmology (KICC), University of Cambridge, Madingley Road, CB3 0HA, Cambridge, UK
4 Physics Department, Ben-Gurion University of the Negev, 84105, Beersheba, Israel
5 Bahamas Advanced Study Institute and Conferences, 4A Ocean Heights, Hill View Circle, Stella Maris, Long Island, Bahamas
6 Fachbereich Physik, Goethe-Universität, Max-von-Laue-Strasse 1, 60438, Frankfurt am Main, Germany
7 GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstrasse 1, 64291, Darmstadt, Germany
Accepted: 6 March 2022
Published online: 26 March 2022
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 . 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.
© The Author(s) 2022
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