Effect of Varying Bulk Viscosity on Generalized Chaplygin Gas
H. Saadat, B. Pourhassan
TL;DR
This paper investigates how varying bulk viscosity in generalized Chaplygin gas models affects dark energy behavior, revealing connections to modified Chaplygin gas under specific conditions.
Contribution
It introduces a model with non-constant bulk viscosity in generalized Chaplygin gas and explores its implications for dark energy dynamics.
Findings
Viscous generalized Chaplygin gas can mimic modified Chaplygin gas.
Density-dependent viscosities influence dark energy evolution.
Special cases link viscous models to known Chaplygin gas variants.
Abstract
In this paper, viscous generalized Chaplygin gas as a model of dark energy considered. We assume non-constant bulk viscous coefficient and study dark energy density. We consider several cases of density-dependent viscosities. We find that, in the special case, the viscous generalized Chaplygin gas is corresponding to modified Chaplygin gas.
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