Holographic dark energy in non-conserved gravity theory  

作　　者：H R Fazlollahi 

机构地区：[1]Institute of Gravitation and Cosmology,Peoples Friendship University of Russia(RUDN University),6 Miklukho-Maklaya St,Moscow,117198,Russia

出　　处：《Communications in Theoretical Physics》2024年第4期126-133,共8页理论物理通讯（英文版）

摘　　要：Recently, reconsidering the Rastall idea T_(μ;νν)^(v)=α_(,μ) through relativistic thermodynamics gives a new form for the scalar field α which led us to construct modern modified theory of gravity debugged ‘non-conserved gravity theory’ Fazlollahi 2023 Euro. Phys. J. C 83 923. This theory unlike other modified theories of gravity cannot directly explain the current acceleration expansion in the absence of the cosmological constant and or existence of other forms of dark energy. Hence, in this study we have reinvestigated holographic dark energy Ρ_(X)~H^(2) in the non-conserved theory of gravity. In this context, the density and pressure of dark energy depend on the non-conserved term and density of the dust matter field. As shown, due to non-conservation effects on large-scale structures, unlike the original holographic model, our model onsets an acceleration epoch for the current Universe satisfies observations. Moreover, the interaction and viscous scenarios are studied for this model.

关 键 词：non-conserved gravity covariant form of thermodynamics holographic dark energy 

分 类 号：P159[天文地球—天文学]