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FIZIKA B 18 (2009) 1, 43-54
 
A MODEL TO EXPLAIN VARYING G AND L WITH CONSTANT
DECELERATION PARAMETER
R. K. TIWARIa, S. S. TIWARIa and P. PANDEYb
aDepartment of Mathematics, Governemnt Model Science College, Rewa (M.P.)
486001, India
bDepartment of Physics, Governemnt Model Science College, Rewa (M.P.)
486001, India
Received 30 May 2008; Revised manuscript received 15 November
2008
Accepted 17 December 2008 Online 31 May 2009
We study the evolution of homogeneous and anisotropic Bianchi type-I
cosmological models in the presence of perfect fluid with variable G and
L by assuming a special law of variation for Hubble's parameter that yields a
constant value of the deceleration parameter. Some physical consequences of the
model are discussed in the case of Zel'dovich fluid and radiation-dominated
fluid.
PACS numbers: 98.80.Es, 98.80.-k
UDC 524.83
Keywords: cosmology, variable cosmological term, cosmological models,
Hubble's parameter
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