Accelerated expansion from a non-minimal gravitational coupling to matter

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Orfeu Bertolami (Author) Other; Pedro Frazão (Author) Other; Jorge Páramos (Author) Other

Journal

Title: Physical Review D: Particles and fields

Vol. 81

Initial page: 104046

ISSN: 0556-2821

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 101 Citations

Scopus - 102 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-6QN

DOI: 10.1103/PhysRevD.81.104046

Abstract (EN): It is shown that a non-minimal coupling between the scalar curvature and the matter Lagrangian density may account for the accelerated expansion of the Universe and provide, through mimicking, for a viable unification of dark energy and dark matter. An analytical exploration is first performed, and a numerical study is then used to validate the obtained results. The encountered scenario allows for a better grasp of the proposed mechanism, and sets up the discussion for improvements that can lead to a complete agreement with the observational data.

Language: Portuguese

Type (Professor's evaluation): Scientific