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Self-creation theory of gravitation. A self-similar approach. (English) Zbl 1276.83036

Summary: In order to study how the gravitational constant, \(G\), varies within the Barber’s second self-creation theory of gravitation we find exact solutions for Bianchi type I, \(\mathrm{VII}_0\), IX and Kantowski-Sach (KS) under the self-similar hypothesis. Some physical and geometrical properties of the models are also discussed and compare the obtained results with the current observations. We also compare our results with the obtained ones in the Brans-Dicke theory.

MSC:

83D05 Relativistic gravitational theories other than Einstein’s, including asymmetric field theories
83F05 Relativistic cosmology
83C20 Classes of solutions; algebraically special solutions, metrics with symmetries for problems in general relativity and gravitational theory
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References:

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