Abstract
We investigate the particle creation, as well as the thermodynamics phenomenon of viscous generalized cosmic Chaplygin gas as a cosmic fluid by assuming the flat FRW universe. For this purpose, we extract various parameters such as the energy density ( Ï ) , Hubble parameter ( H ) , declaration parameter ( q ) , temperature ( T f ) , and particle number density ( n ) in the presence of three different models of the particle creation rate ( Î ). We discuss the validity of the generalized second law of thermodynamics and thermal equilibrium condition under three models of Î and discuss the graphical behavior of above-mentioned terms.
Highlights
Einstein gravity introduced the idea of a static universe by adding the cosmological constant in the field equation of general relativity
It was found that the particle creation mechanism has been extensively utilized in order to investigate the dynamics and evolution of the early universe including early inflation and the current accelerated expansion [55]
We considered the cosmological implications of bulk viscous pressure due to the particle creation mechanism in a universe with matter described by generalized cosmic Chaplygin gas (GCCG)
Summary
Einstein gravity introduced the idea of a static universe by adding the cosmological constant in the field equation of general relativity. The case (1 + Μ) > 0 is thought provoking in the recent accelerated expansion in which GCG acts as dust for the primordial universe and DE with negative EoS for the present time universe Another regime, (1 + Μ) < 0, is interesting [37] because GCG mimics initially the cosmological constant, but the EoS grows and behaves like dust with the passage of time. The particle creation mechanism driving bulk viscous pressure has been extensively used to describe the dynamics and evolution of the early universe including early inflation and current accelerated expansion [55]. We investigate the particle creation, as well as the thermodynamics phenomenon in the presence of the viscous-inspired GCCG model.
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