A novel teleparallel dark energy model

Understand

Although equivalent to general relativity, teleparallel gravity is conceptually speaking a completely different theory.

• In this theory, the gravitational field is described by torsion, not by curvature.
• By working in this context, a new model is proposed in which the four-derivative of a canonical scalar field representing dark energy is nonminimally coupled to the "vector torsion".
• This type of coupling is motivated by the fact that a scalar field couples to torsion through its four-derivative, which is consistent with local spacetime kinematics regulated by the de Sitter group $SO(1,4)$.