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Phantom dark energy from scalar-torsion coupling

Department of Mathematics and Physics, University of New Haven, 300 Boston Post Road, West Haven, CT 06516, USA

https://doi.org/10.1142/S0217732320503319Cited by:4 (Source: Crossref)

Abstract

We show that a scalar field without a kinetic term in the Lagrangian density, coupled to the covariant divergence of the torsion vector in the Einstein–Cartan theory of gravity, becomes kinetic in its general-relativistic equivalent formulation. The resulting kinetic term is negative: such a scalar field could be a source of phantom dark energy.

Keywords:

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