FIZIKA B 19 (2010) 3, 149-160

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SPATIALLY HOMOGENEOUS BIANCHI TYPE-V COSMOLOGICAL MODELS IN BRANS-DICKE THEORY

MOHD. ZEYAUDDINa and SHRI RAMb
aDepartment of Applied Sciences, Sharda University, Sector 23 A, Gurgaon-122017, India
bDepartment of Applied Mathematics, Institute of Technology, Banaras Hindu University, Varanasi-2210 05, India
E-mail addresses: zeyaitbhu@rediffmail.com , srmathitbhu@rediffmail.com

Received 19 August 2009;     Accepted 12 January 2011
Online 24 February 2011

We discuss the field equations of Brans-Dicke theory for a spatially homogeneous and anisotropic Bianchi type-V space-time in the presence of a perfect fluid and obtain their exact solutions by applying the law of variation of Hubble's parameter which yields a constant value of deceleration parameter. The corresponding cosmological models are divided into two categories, (i) singular models with power-law expansion, (ii) non-singular models with exponential expansion. The physical and kinematical behaviors of the cosmological models are discussed. These models are compatible with the results of recent observations.

PACS numbers: 98.80. Es; 98.80. -k
UDC 524.83, 52-423

Keywords: cosmology, Bianchi V models, Hubble's parameter, Brans-Dicke theory

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