Portal de Periódicos da CAPES

Minimal extension of General Relativity: Alternative gravity model with non-minimal coupling between matter and curvature

2013; World Scientific; Volume: 11; Issue: 02 Linguagem: Inglês

10.1142/s0219887814600032

1793-6977

Orfeu Bertolami, Jorge Páramos,

Relativity and Gravitational Theory

We examine an extension of General Relativity with an explicit non-minimal coupling between matter and curvature. The purpose of this work is to present an overview of the implications of the latter to various contexts, ranging from astrophysical matter distributions to a cosmological setting. Various results are discussed, including the impact of this non-minimal coupling on the choice of Lagrangian density, on a mechanism to mimic galactic and cluster dark matter, on the possibility of accounting for the accelerated expansion of the Universe, energy density fluctuations and modifications to post-inflationary reheating. The equivalence between a model exhibiting a non-minimal coupling and multi-scalar-theories is also discussed.