Nonminimal torsion-matter coupling extension of f(T) gravity

Harko T.; Lobo, FSN; Otalora G.; Saridakis, EN

Abstract

We construct an extension of f(T) gravity with the inclusion of a nonminimal torsion-matter coupling in the action. The resulting theory is a novel gravitational modification, since it is different from both f(T) gravity, as well as from the nonminimal curvature-matter-coupled theory. The cosmological application of this new theory proves to be very interesting. In particular, we obtain an effective dark energy sector whose equation-of-state parameter can be quintessence- or phantom-like, or exhibit the phantom-divide crossing, while for a large range of the model parameters the universe enters in a de Sitter, dark-energy-dominated, accelerating phase. Additionally, we can obtain early-time inflationary solutions too, and thus provide a unified description of the cosmological history.

Más información

Título según WOS: Nonminimal torsion-matter coupling extension of f(T) gravity
Título según SCOPUS: Nonminimal torsion-matter coupling extension of f (T) gravity
Título de la Revista: PHYSICAL REVIEW D
Volumen: 89
Número: 12
Editorial: American Physical Society
Fecha de publicación: 2014
Idioma: English
DOI:

10.1103/PhysRevD.89.124036

Notas: ISI, SCOPUS