Abstract
The modified theories of gravity, especially the f(R) gravity, have attracted much attention in the last decade. In this context, we study the exact vacuum solutions of Bianchi type I, III and Kantowski-Sachs spacetimes in the metric version of f(R) gravity. The field equations are solved by taking expansion scalar θ proportional to shear scalar σ which gives A=B n, where A and B are the metric coefficients. The physical behavior of the solutions has been discussed using some physical quantities. Also, the function of the Ricci scalar is evaluated in each case.
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Shamir, M.F. Some Bianchi type cosmological models in f(R) gravity. Astrophys Space Sci 330, 183–189 (2010). https://doi.org/10.1007/s10509-010-0371-5
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DOI: https://doi.org/10.1007/s10509-010-0371-5