Modified Chaplygin gas with bulk viscous cosmology in FRW (2+1)-dimensional spacetime

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作者
G. S. Khadekar
Praveen Kumar
Safiqul Islam
机构
[1] Rashtrasant Tukadoji Maharaj Nagpur University,Department of Mathematics
[2] Harish-Chandra Research Institute,undefined
[3] HBNI,undefined
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FRW cosmology; bulk viscosity; modified Chaplygin gas;
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摘要
In this paper we study the bulk viscous cosmology by considering modified Chaplygin gas in the framework of (2+1)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$(2+1)$$\end{document}-dimensional spacetime. For this we consider various form of bulk viscosity coefficient ζ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\zeta $$\end{document} and then obtain the physical parameters energy density ρ\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\rho $$\end{document}, Hubble and deceleration parameters, H and q,  respectively. Finally we discuss the stability of the model by using the speed of sound.
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