The dark side of the torsion: Dark Energy from propagating torsion

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 $S^{\mu }$. 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.

6 pages, 2 figures; accepted in EPJC

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• Observational Constraints on Dark Energy Models with $\Lambda$ as an Equilibrium Point
• Coupling Metric-Affine Gravity to the Standard Model and Dark Matter Fermions
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• Constraining $F(R)$ bouncing cosmologies with primordial black holes
• Torsional dark energy in quadratic gauge gravity
• Big Bang Nucleosynthesis constraints on $f(T,T_G)$ gravity
• Einstein-Proca theory from the Einstein-Cartan formulation
• Toward Singularity Theorems with Torsion
• Bounding the Cosmological Constant using Galactic Rotation Curves from the SPARC Dataset
• Time behaviour of Hubble parameter by torsion
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• Holographic Dark Energy with Torsion
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• Exact Geometries from Boundary Gravity
• Bouncing Cosmologies in modified gravity with space time torsion
• Cosmology in the De Donder-Weyl Formulation of Einstein-Cartan Gravity
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