Some versions of Chaplygin gas model in modified gravity framework and validity of generalized second law of thermodynamics

被引：1

作者：

Sultana, Sanjeeda ^{[1
]}

Gudekli, Ertan ^{[2
]}

Chattopadhyay, Surajit ^{[1
]}

机构：

[1] Amity Univ Kolkata, Dept Math, Major Arterial Rd,Act Area 2, Kolkata 700135, India

[2] Istanbul Univ, Dept Phys, TR-34134 Istanbul, Turkiye

来源：

ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES | 2024年 / 79卷 / 01期

关键词：

equation of state parameter; f(t) gravity; generalized Chaplygin gas; generalized second law of thermodynamics; modified generalized Chaplygin gas; EQUATION-OF-STATE; DARK ENERGY; F(T) GRAVITY; UNIVERSE; COSMOLOGY; INSTABILITY; EVOLUTION; INFLATION; ENTROPY; MATTER;

D O I：

10.1515/zna-2023-0085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In the work reported in this paper, we have analyzed generalized Chaplygin gas (GCG) and modified generalized Chaplygin gas (MGCG) in an interacting scenario. The equation of state parameter has been analyzed in both the cases and the stability of the models has been discerned through squared speed of sound. Stability against gravitational perturbations has been observed for both GCG and MGCG interacting with pressureless dark matter. Also, the generalized second law (GSL) of thermodynamics has been tested for different enveloping horizons and validity of GSL has been observed throughout. Furthermore, f(T) gravity has been reconstructed with GCG and MGCG and phantom behaviour has been observed through reconstructed EoS parameters. The squared speed of sound has been derived for f(T) gravity and stability of the model has been established through its positivity.

引用

页码：51 / 70

页数：20

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