Two Fluid Scenario for Dark Energy Model in a Scalar-Tensor Theory of Gravitation |
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| Authors: | D R K Reddy R Santhi Kumar |
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| Institution: | 1. Department of Science and Humanities, MVGR College of Engineering, Vizianagaram, Andhra Pradesh, India
2. Department of Basic Science and Humanities, Aditya Institute of Technology and Management, Tekkali, Srikakulam, Andhra Pradesh, India
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| Abstract: | In this paper, we investigate the evolution of dark energy parameter in the spatially homogeneous and isotropic Friedmann-Robertson-Walker (FRW) model filled with barotropic fluid and dark energy in the framework of scalar-tensor theory of gravitation formulated by Saez and Ballester (Phys. Lett. A 113:467, 1986). To obtain a determinate solution special law of variation for Hubble’s parameter proposed by Bermann (Nuovo Cimento B 74:183, 1983) is used. We consider the two cases of interacting and non-interacting fluid (barotropic and dark energy) scenario and obtained general results. The physical aspects of the results obtained are also discussed. |
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