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Bulk viscosity; gravitational constant; Lyra geometry

We have studied five-dimensional homogeneous cosmological models with variableG and bulk viscosity in Lyra geometry. Exact solutions for the field equations have been obtained and physical properties of the models are discussed. It has been observed that the results of new models are well within the observational limit.

G P Singh¹ R V Deshpande² T Singh³

1. Department of Mathematics, Visvesvaraya National Institute of Technology, Nagpur - 440 011, India
2. Department of Mathematics, Priyadarshini College of Engineering and Architecture, Nagpur - 440 016, India
3. Department of Applied Mathematics, Institute of Technology, sBanaras Hindu University, Varanasi - 221 005, India

Manuscript received

9 February 2004

Manuscript revised

19 June 2004

Accepted

12 August 2004