Viscous Dark Energy In Bianchi Type V Space-Time

Abstract

We study the behavior of dark energy (DE) in the scope of anisotropic Bianchi type V (BV) space-time. First we derive Friedmann-Like Equations, then we compare the dark energy equation of state (EoS) parameter for viscous and non-viscous dark energy and make a correspondence between DE and quintessence and phantom descriptions of non-viscous and viscous dark energy and reconstruct the potential of these two scalar fields. The late time behavior of EoS parameter through a thermodynamical study has also been investigated. Finally, we investigate the conditions under which BV space-time can be mapped into the FRW and how the bulk viscose coefficient may affect dark energy EoS parameter of our $ω\mbox{BV}$ Model with constraints from 28 Hubble parameter, $H(z)$, measurements at intermediate redshifts $0.07\le z\le 2.3$.

12 pages, 5 figures, 3 tables

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• Anisotropic LRS-BI Universe with $f(Q)$ gravity theory
• Anisotropic Universe in $f(Q,T)$ gravity, a novel study
• Cosmic acceleration with bulk viscosity in an anisotropic $f(R,L_m)$ background