Stability Properties of Geometrothermodynamic Cosmological Models

被引：1

作者：

Beissen, Nurzada ^{[1
]}

Abishev, Medeu ^{[1
,2
]}

Khassanov, Manas ^{[1
]}

Aitassov, Temirbolat ^{[3
]}

Mamatova, Sagira ^{[1
]}

Toktarbay, Saken ^{[1
,4
]}

机构：

[1] Al Farabi Kazakh Natl Univ, Inst Expt & Theoret Phys, Alma Ata 050040, Kazakhstan

[2] Inst Nucl Phys, 1 Ibragimova St, Alma Ata 050032, Kazakhstan

[3] Abai Kazakh Natl Pedag Univ, Dept Math Phys & Informat Teaching Methods, Alma Ata 050010, Kazakhstan

[4] Kazakh Natl Womens Teacher Training Univ, Dept Phys, Alma Ata 050000, Kazakhstan

来源：

ENTROPY | 2023年 / 25卷 / 10期

关键词：

cosmology; geometrothermodynamics; METRIC GEOMETRY; EQUILIBRIUM THERMODYNAMICS;

D O I：

10.3390/e25101391

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We consider a particular isotropic and homogeneous cosmological model, in which the equation of state is obtained from a thermodynamic fundamental equation by using the formalism of geometrothermodynamics (GTD). The model depends effectively on three arbitrary constants, which can be fixed to reproduce the main aspects of the inflationary era and the Lambda CDM paradigm. We use GTD to analyze the geometric properties of the corresponding equilibrium space and to derive the stability properties and phase transition structure of the cosmological model.

引用

页数：11

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