Qualitative aspects of Rastall gravity with barotropic fluid

We investigate the dynamical evolution of a homogeneous and isotropic flat universe filled with a barotropic fluid satisfying the linear equation of state in Rastall gravity. Using the dynamical system approach, we determined the fixed points of the system and studied their stability. We further exp...

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Bibliographic Details
Published inCanadian journal of physics Vol. 99; no. 12; pp. 1073 - 1081
Main Authors Singh, Ashutosh, Raushan, Rakesh, Chaubey, R
Format Journal Article
LanguageEnglish
Published 1840 Woodward Drive, Suite 1, Ottawa, ON K2C 0P7 NRC Research Press 01.12.2021
Canadian Science Publishing NRC Research Press
Subjects
cyclic universe
dynamical system
Dynamical systems
Equations of state
Gravity
gravité de Rastall
Horizon
Linear equations
Rastall gravity
système dynamique
Thermodynamic equilibrium
Thermodynamics
thermodynamique
univers cyclique
Universe
Iran
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Summary:We investigate the dynamical evolution of a homogeneous and isotropic flat universe filled with a barotropic fluid satisfying the linear equation of state in Rastall gravity. Using the dynamical system approach, we determined the fixed points of the system and studied their stability. We further explore the thermodynamic aspects at the apparent horizon by investigating the validity of the generalised second law of thermodynamics with an equilibrium description.
ISSN:0008-4204
1208-6045
DOI:10.1139/cjp-2020-0061