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Mohamad Reza Setare

Mohamad Reza Setare

Academic rank: Professor
ORCID:
Education: PhD.
ScopusId: 7003669033
Faculty: Faculty of Science
Address:
Phone: 08716660075

Research

Title
Holographic dark energy in Brans-Dicke cosmology with chameleon scalar field
Type
JournalPaper
Keywords
Brans–Dicke gravity; Chameleon scalar field; Holographic dark energy; Phantom-like; Coupling parameter; Cosmological model
Year
2010
Journal PHYSICS LETTERS B
DOI
Researchers Mohamad Reza Setare ، Mubasher Jamil

Abstract

We study a cosmological implication of holographic dark energy in the Brans-Dicke gravity. We employ the holographic model of dark energy to obtain the equation of state for the holographic energy density in non-flat (closed) universe enclosed by the event horizon measured from the sphere of horizon named $L$. Our analysis shows that one can obtain the phantom crossing scenario if the model parameter $\alpha$ (of order unity) is tuned accordingly. Moreover, this behavior is achieved by treating the Brans-Dicke scalar field as a Chameleon scalar field and taking a non-minimal coupling of the scalar field with matter. Hence one can generate phantom-like equation of state from a holographic dark energy model in non-flat universe in the Brans-Dicke cosmology framework.