BIANCHI TYPE – VI COSMOLOGICAL MODELS WITH STIFF FLUID AND TIME VARYING G AND ⩘

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Shoma S. Sen, S. W. S. (Pahade),. (2013). BIANCHI TYPE – VI COSMOLOGICAL MODELS WITH STIFF FLUID AND TIME VARYING G AND ⩘. Asian Journal of Current Engineering and Maths, 2(3). Retrieved from http://innovativejournal.in/index.php/ajcem/article/view/179
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Abstract

In the present work, we have searched Bianchi Type VI cosmological model with variable gravitational and cosmological constants in the presence of perfect fluid by assuming the condition 22HR+=Λβ {Carvalho and Lima, 1992}, where β adjustable constant and H is the Hubble parameter. Exact solutions of Einstein field equations have been obtained by taking 1=γ, where γis the equation of state parameter. It is found that models obtained are expanding, shearing and non-rotating. The model shows that G varies with time as suggested earlier by large number of hypothesis proposed by Dirac. Also the value of cosmological constant Λ for the model is found to be small and positive which is supported by the results from recent supernovae Ia observation. Some physical and geometrical properties of the model are also discussed.

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