Madhusmita Rout, Shantanu Kumar Biswal, Rohit Kumar Sarangi, S. K. Tripathy
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引用次数: 0
Abstract
We investigate the cosmic progression of the Universe in the framework of Barber’s second self-creation (BSC) theory of gravitation in a non-interacting scenario with dark energy and dark matter. Using a Bianchi Type I metric in the self-creation of gravitation, we obtain the field equations that account for the presence of a cosmological constant. By considering the relationship between the average scale factor and Barber’s scalar field as a power law, solutions to these equations have been successfully obtained. Two assumed cosmic dynamics in the form of exponential expansion and power-law expansion are used to get the dark energy equation-of-state parameter. The effect of a polytropic equation of state on the physical quantities is studied. The role of the deceleration parameter and the effect of cosmic anisotropy on the cosmic dynamics are discussed.
期刊介绍：
Gravitation and Cosmology is a peer-reviewed periodical, dealing with the full range of topics of gravitational physics and relativistic cosmology and published under the auspices of the Russian Gravitation Society and Peoples’ Friendship University of Russia. The journal publishes research papers, review articles and brief communications on the following fields: theoretical (classical and quantum) gravitation; relativistic astrophysics and cosmology, exact solutions and modern mathematical methods in gravitation and cosmology, including Lie groups, geometry and topology; unification theories including gravitation; fundamental physical constants and their possible variations; fundamental gravity experiments on Earth and in space; related topics. It also publishes selected old papers which have not lost their topicality but were previously published only in Russian and were not available to the worldwide research community
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