Brans-Dicke scalar field as a chameleon

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.78.043512· OSTI ID:21250460

Das, Sudipta; Banerjee, Narayan ^[1]

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1. Relativity and Cosmology Research Centre, Department of Physics, Jadavpur University, Calcutta-700 032 (India)

In this paper it is shown that in Brans-Dicke theory, if one considers a nonminimal coupling between the matter and the scalar field, it can give rise to a late time accelerated expansion for the Universe preceded by a decelerated expansion for very high values of the Brans-Dicke parameter {omega}.

• OSTI ID: 21250460
• Journal Information: Physical Review. D, Particles Fields, Vol. 78, Issue 4; Other Information: DOI: 10.1103/PhysRevD.78.043512; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COUPLING
EXPANSION
MATTER
SCALAR FIELDS
UNIVERSE