https://doi.org/10.1140/epjc/s10052-023-11571-2
Regular Article - Theoretical Physics
Torsion driving cosmic expansion
1
Frankfurt Institute for Advanced Studies, Ruth-Moufang-Strasse 1, 60438, Frankfurt am Main, Germany
2
Goethe-Universität, Max-von-Laue-Strasse 1, 60438, Frankfurt am Main, Germany
a
jkirsch@fias.uni-frankfurt.de
Received:
12
March
2023
Accepted:
1
May
2023
Published online:
22
May
2023
We study a cosmological model based on the canonical Hamiltonian transformation theory. Using a linear-quadratic approach for the free gravitational De Donder–Weyl Hamiltonian 
, the model contains terms describing a deformation of an AdS spacetime and a fully anti-symmetric torsion in addition to Einstein’s theory. The resulting extension of the Einstein–Cartan theory depends on two initially unknown constants, 
and 
. Given an appropriate choice of these parameters resulting from the analysis of asymptotics, numerical calculations were performed with 
. Values from the Planck Collaboration (Aghanim in Cosmol Parameters 641, 6, 2020) were used for all other required cosmological parameters. In this way, it is shown that torsion can explain phenomena commonly attributed to dark energy, and thus can replace Einstein’s cosmological constant.
David Vasak, Armin van de Venn, and Jürgen Struckmeier contributed equally to this work.
© The Author(s) 2023
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