Dynamical behaviours of Chaplygin gas, cosmological and gravitational ‘constants’ with cosmic viscous fluid in Bianchi type V space-time geometry

Abstract

This paper is devoted to study modified Chaplygin gas and cosmological ‘constant’ as candidates of dark energy in the presence of cosmic viscous fluid with reference to the Bianchi type V space-time geometry. To represent a more viable cosmological model, variation of gravitational ‘constant’ is also considered. Precise solutions of equations of field have been acquired, where scale factors expand as monomial functions of cosmic time. Further, by use of graphical representation, behaviours of various parameters are also examined.

Bulk Viscous Bianchi Type-V Cosmological Model in f(R, T) Theory of Gravity

“…The bulk viscosity cosmological models have been discussed, and the model's nature has been discussed by Fabris (Fabris et al, 2006), Singh (Singh and Baghel, 2009), Yadav (Yadav and Yadav, 2011), Singh (Bali et al, 2012), Kiran (Kiran and Reddy, 2013), Mahanta (Mahanta, 2014), Rao (Bhaskara Rao et al, 2015), Tiwari (Tiwari and Tiwari, 2017), and Sahoo (Sahoo and Reddy, 2018). Very recently Goswami (Goswami et al, 2021) and Kotambkar (Kotambkar et al, 2021) have investigated the modeling of accelerating and the dynamical behaviours of Chaplygin gas, cosmological and gravitational "constants" with cosmic viscous fluid in different contexts.…”