Generalized second law of thermodynamics for non-canonical scalar field model with corrected-entropy

Abstract

In this work, we have considered a non-canonical scalar field dark energy model in the framework of flat FRW background. It has also been assumed that the dark matter sector interacts with the non-canonical dark energy sector through some interaction term. Using the solutions for this interacting non-canonical scalar field dark energy model, we have investigated the validity of generalized second law (GSL) of thermodynamics in various scenarios using first law and area law of thermodynamics. For this purpose, we have assumed two types of horizons viz apparent horizon and event horizon for the universe and using first law of thermodynamics, we have examined the validity of GSL on both apparent and event horizons. Next, we have considered two types of entropy-corrections on apparent and event horizons. Using the modified area law, we have examined the validity of GSL of thermodynamics on apparent and event horizons under some restrictions of model parameters.

Cosmic and thermodynamic study of non-canonical scalar field in parameterized modified gravity

“…Huang, et al [62] utilized scalar-tensor theory to prove that UFL is identical to Friedmann equations and also found that GSLT is valid for apparent horizon. Das, et al [63] investigated thermodynamics of universe and found that GSLT is valid on both apparent and event horizons under the realm of non-canonical scalar fields DE model. Khan, et al [41] utilized cubic gravity with Λ term to investigate the different cosmological parameters, GSLT and found that they lie in the ranges of observational bounds.…”

“…Khan, et al [41] utilized cubic gravity with Λ term to investigate the different cosmological parameters, GSLT and found that they lie in the ranges of observational bounds. The above work especially [63] motivated us to investigate some cosmological parameters and the thermodynamic properties of universe in parameterized cubic gravity.…”

Dynamical systems analysis of an interacting scalar field model in an anisotropic universe

“…Also, in this model, a scalar field is minimally coupled to gravity to drive the accelerated expansion phase of the Universe. Indeed, various interesting possibilities with non-canonical scalar field has been recently studied in the literature for addressing several kinds of cosmological issues [30][31][32][33][34][35][36][37][38].…”

Study of thermal stability for different dark energy models

“…As is well known, the thermodynamical study of DE is a powerful apporoach for a better understanding of the unknown nature of the DE component (for details, see Refs. [12][13][14][15][16][17][18][19]) and thermodynamical aspects are important in this respect. Based on experimental evidences, thermodynamical laws are applicable to different macroscopic systems.…”