|
FIZIKA B 18 (2009) 1, 9-18
 
BIANCHI TYPE-V COSMOLOGICAL MODELS WITH CONSTANT DECELERATION PARAMETER IN
SCALAR-TENSOR THEORY
R. K. TIWARI
Department of Mathematics, Government Model Science College Rewa,
(M.P.)-486001, India
Received 24 June 2008; Revised manuscript received 12 November 2008
Accepted 4 March 2009 Online 20 April 2009
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
Keywords: Bianchi type-V, Hubble's parameter, deceleration parameter, Saez-Ballester theory
|
