Variable Chaplygin gas cosmologies in f(R, T) gravity with particle creation

•A flat FLRW cosmological model with perfect fluid comprising of variable Chaplygin gas has been studied in context of gravity with particle creation.•Three different anstaz of the scale factor is used to discuss particle creation mechanism.•The time evolution of source function yields almost consta...

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Bibliographic Details
Published inNew astronomy Vol. 77; p. 101357
Main Authors Hulke, N., Singh, G.P., Bishi, Binaya K., Singh, Ashutosh
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.05.2020
Subjects
Accelerated universe
Emergent law
Intermediate law
Particle creation
Intermediate law
Emergent law
98.80-k
Accelerated universe
98.80.Jk
Particle creation
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Summary:•A flat FLRW cosmological model with perfect fluid comprising of variable Chaplygin gas has been studied in context of gravity with particle creation.•Three different anstaz of the scale factor is used to discuss particle creation mechanism.•The time evolution of source function yields almost constant particle production at late times in case. A flat FLRW (Friedmann–Lemaitre–Robertson–Walker) cosmological model with perfect fluid comprising of variable Chaplygin gas (VCG) has been studied in the context of f(R, T) gravity with particle creation. The solutions of the modified field equations are obtained through three different considered form of scale factors. The effective pressure is negative throughout the evolution of universe, which leads to accelerated expansion of the universe. In addition to that we have also discussed the importance of particle creation pressure on the cosmological parameters, energy conditions and state-finder diagnostic parameters. It is noticed that the time evolution of source function yields almost constant particle production at late times.
ISSN:1384-1076
1384-1092
DOI:10.1016/j.newast.2020.101357