Behaviour of viscous fluid in string cosmological models in the framework of Lyra geometry |
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| Institution: | 1. Department of Mathematics, Commerce College, Kokrajhar, Kokrajhar-783370, BTC, Assam, India;2. Department of Mathematics, Manipur University, Imphal, Manipur 795003, India;1. Department of Mathematics, COMSATS University Islamabad, Lahore Campus, Lahore, Pakistan;2. Department of Physics, Istanbul University, Istanbul Turkey;1. Department of Mathematics, Govt. Model Science College, Rewa (M. P.) 486001, India;2. Department of Physics, İstanbul University, Vezneciler, 34134, Fatih, İstanbul, Turkey;1. Department of Electricity and Energy,Çan Vocational School, Çanakkale Onsekiz Mart University, Çanakkale, 17400, Turkey;2. Department of Physics, Art and Science Faculty, Çanakkale Onsekiz Mart University, Çanakkale, 17020, Turkey;1. Department of Mathematics, Birla Institute of Technology and Science-Pilani Hyderabad Campus, Hyderabad, 500078, India;2. Department of Mathematics, Lovely Professional University, Phagwara, Jalandhar, Punjab 144401, India;3. Department of Physics, Canakkale Onsekiz Mart University, Arts and Sciences Faculty, Terzioglu Campus, 17020, Turkey |
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| Abstract: | In this communication, we studied the aspects of bulk viscous fluid cosmological model with quadratic equation of state in the presence of strings loaded with particles in a higher dimensional (5- dimensional) Bianchi type-III geometry in Lyra’s Manifold (Lyra, 1951). Using physically plausible circumstances, an exact model of the universe is presented by obtaining the solutions of the Einstein’s field equations. Important geometrical and dynamical parameters of the model universes are premeditated and physical significance regarding their prospect in modern cosmology are discussed in details. Interestingly it is seen that both bulk viscosity and quadratic equation of state are acting crucial jobs throughout the evolution of the model which is expanding with acceleration so it represents dark energy model universe. Hence our model can be thought as a realistic universe. |
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