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

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Orfeu Bertolami (Author) FCUP; Jorge Páramos (Author) FCUP

Journal

Title: International Journal of Geometric Methods in Modern Physics

Vol. 11

Initial page: 1460003

ISSN: 0219-8878

Publisher: World Scientific

Indexing

ISI Web of Knowledge - 16 Citations

Scopus - 18 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

CORDIS: Physical sciences > Physics > Relativity

Other information

Authenticus ID: P-009-77F

DOI: 10.1142/S0219887814600032

Abstract (EN): 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.

Language: Portuguese

Type (Professor's evaluation): Scientific