2009•Unpublished venueRequires access

BIANCHI TYPE-V COSMOLOGICAL MODELS WITH CONSTANT DECELERATION PARAMETER IN SCALAR-TENSOR THEORY

Coden Fizbe, R. K. Tiwari

Abstract

Einstein’s field equations are obtained for Bianchi type-V space-time filled with perfect fluid, and are investigated within the framework of scalar-tensor theory of gravitation proposed by Saez and Ballester. By using a special law of variation for Hubble’s parameter, a constant value of the deceleration parameter was obtained. Two different physically viable models of the universe are obtained and one is found to be consistent with the recent observations of type Ia supernovae. Physical and kinematical properties of the models are also discussed. PACS numbers: 98.80.Es, 98.80.Jk UDC 524.83

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Key concepts: Deceleration parameter, Scalar–tensor theory, Physics, Hubble's law, Mathematical physics, Type (biology), Gravitation, Constant (computer programming)