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Bianchi types II, VIII and IX string cosmological models with bulk viscosity in Brans-Dicke theory of gravitation. (English) Zbl 1259.83027

Summary: We have obtained and presented spatially homogeneous Bianchi types II, VIII and IX string cosmological models with bulk viscosity in a scalar tensor theory of gravitation proposed by C. Brans and R. H. Dicke [Phys. Rev. (2) 124, 925–935 (1961; Zbl 0103.21402)]. It is observed that in case of Bianchi type-IX universe, only bulk viscous cosmological model exists. Some physical and geometrical properties of the models are also discussed.

MSC:

83F05 Relativistic cosmology
83D05 Relativistic gravitational theories other than Einstein’s, including asymmetric field theories
83C15 Exact solutions to problems in general relativity and gravitational theory
83E30 String and superstring theories in gravitational theory

Citations:

Zbl 0103.21402
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References:

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