Cosmological perturbations in theories with non-minimal coupling between curvature and matter

• Type: Article in International Scientific Journal
• Date: 2013

Authors

Orfeu Bertolami (Author) FCUP; Pedro Frazao (Author) Other; Jorge Paramos (Author) FCUP

Journal

Title: Journal of Cosmology and Astroparticle Physics

Vol. 2013

Pages: 029-029

ISSN: 1475-7516

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 41 Citations

Scopus - 41 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-006-B9W

DOI: 10.1088/1475-7516/2013/05/029

Abstract (EN): In this work, we examine how the presence of a non-minimal coupling between spacetime curvature and matter affects the evolution of cosmological perturbations on a homogeneous and isotropic Universe, and hence the formation of large-scale structure. This framework places constraints on the terms which arise due to the coupling with matter and, in particular, on the modified growth of matter density perturbations. We derive approximate analytical solutions for the evolution of matter overdensities during the matter dominated era and discuss the compatibility of the obtained results with the hypothesis that the late time acceleration of the Universe is driven by a non-minimal coupling.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 19