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Kourosh Nozari

Kourosh Nozari

Academic rank: Professor
ORCID: https://orcid.org/0000-0003-4368-5823
Education: PhD.
ScopusId: 9276301800
Faculty: Science
Address: Department of Theoretical Physics, Faculty of Basic Sciences, University of Mazandaran, P. O. Box 47416-95447, Babolsar, Iran
Phone: 01135302482

Research

Title
DGP cosmology with a non-minimally coupled scalar field on the brane
Type
JournalPaper
Keywords
cosmology with extra dimensions, cosmological applications of theories with extra dimensions
Year
2007
Journal Journal of Cosmology and Astroparticle Physics
DOI
Researchers Kourosh Nozari

Abstract

We construct a Dvali–Gabadadze–Porrati (DGP)-inspired braneworld scenario where a scalar field non-minimally coupled to the induced Ricci curvature is present on the brane. First we show that this model allows for an embedding of the standard Friedmann cosmology in the sense that the cosmological evolution of the background metric on the brane can be described by the standard Friedmann equation plus energy non-conservation on the brane. Then cosmological implications of this scenario are examined in detail and the quintessence model and late-time expansion of the universe within this framework are discussed. Some observational constraints imposed on this non-minimal scenario are studied and the relation of this model to the dark radiation formalism is determined.