Scalar-Tensor theories and current Cosmology

Abstract

Scalar-tensor theories are studied in the context of cosmological evolution, where the expansion history of the Universe is reconstructed. It is considered quintessence/phantom models, where inflation and cosmic acceleration are reproduced. Also, the non-minimally coupling regime between the scalar field and the Ricci scalar is studied and cosmological solutions are obtained. The Chamaleon mechanism is shown as a solution of the local gravity tests problems presented in this kind of theories.

10 pages. In press, contribution to "Problems of Modern Cosmology", special volume on the occasion of Prof. S.D. Odintsov's 50th birthday