Bouncing scenario of general relativistic hydrodynamics in extended gravity  

作　　者：A Y Shaikh B Mishra 

机构地区：[1]Department of Mathematics,Indira Gandhi Mahavidyalaya,Ralgaon-445402,India [2]Department of Mathematics,Birla Institute of Technology and Science Pilani,Hyderabad Campus,Hyderabud-500078,India

出　　处：《Communications in Theoretical Physics》2021年第2期96-101,共6页理论物理通讯（英文版）

摘　　要：In this paper,we have framed bouncing cosmological model of the Universe in the presence of general relativistic hydrodynamics in an extended theory of gravity.The metric assumed here is the flat Friedmann–Robertson–Walker space–time and the stress energy tensor is of perfect fluid.Since general relativity(GR)has certain issues with late time cosmic speed up phenomena,here we have introduced an additional matter geometry coupling that described the extended gravity to GR.The dynamical parameters are derived and analyzed.The dynamical behavior of the equation of state parameter has been analyzed.We have observed that the bouncing behavior is mostly controlled by the coupling parameter.

关 键 词：FRW metric extended gravity bouncing scenario energy conditions 

分 类 号：O35[理学—流体力学] O412.1[理学—力学]