Regular Article - Theoretical Physics
Phase Space Analysis and Thermodynamics of Interacting Umami Chaplygin Gas in FRW Universe
Department of Mathematics, University of North Bengal, Raja Rammohunpur, 734013, Darjeeling, West Bengal, India
2 Department of Applied Science, Maulana Abul Kalam Azad University of Technology, Haringhata, 721249, Nadia, West Bengal, India
Accepted: 11 April 2021
Published online: 26 April 2021
In this work interacting Umami Chaplygin gas has been studied in flat FRW model of universe in context of it’s thermodynamic and dynamical behaviour. In particular, considering Umami fluid as dark energy interacting with dark matter, irreversible thermodynamics has been studied both for apparent and event horizon as bounding horizon in two separate cases. Also the model has been investigated in purview of dynamical systems analysis by converting the cosmological evolution equations to an autonomous system of ordinary differential equations. With some restrictions on model parameter and coupling parameter , some cosmologically interesting critical points describing late time accelerated evolution of the universe attracted by cosmological constant and accelerated scaling attractor in quintessence era have been found to alleviate coincidence problem.
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