Non-singular bouncing General Relativistic Hydrodynamics cosmological models

被引：3

作者：

Shaikh, A. Y. ^{[1
]}

Shaikh, A. S. ^{[2
]}

Wankhade, K. S. ^{[3
]}

机构：

[1] Indira Gandhi Mahavidyalaya, Dept Math, Ralegaon, India

[2] Poona Coll Arts Sci & Commerce, Dept Math, Pune, Maharashtra, India

[3] YC Sci Coll, Dept Math, Mangrulpir, India

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2021年 / 366卷 / 07期

关键词：

FRW metric; General relativistic hydrodynamics; General relativity; HUBBLE-SPACE-TELESCOPE; DARK ENERGY; ACCELERATING UNIVERSE; CONSTRAINTS; SUPERNOVAE; DECELERATION; DISCOVERIES; STATEFINDER; SCENARIO;

D O I：

10.1007/s10509-021-03977-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have studied Friedmann-Robertson-Walker (FRW) cosmological models within the presence of General Relativistic Hydrodynamics (GRH) in General Relativity. Exact solutions of the field equations are deduced by considering the special form of the average scale factor considered by Abdussattar and Prajapati (Astrophys. Space Sci. 331:657, 2011), constraining the deceleration parameter and a special form of deceleration parameter by Singh and Debnath (Int. J. Theor. Phys. 48:351, 2009). The value of the deceleration is always negative which represents an inflationary accelerating model of the universe. The cosmic jerk parameter is positive, throughout the entire life of the universe which ensures an accelerated expansion. The Phantom, Chaplygin gas, and Tachyon fields are discussed. The scalar field values of tachyon and phantom increase with time, while the scalar potential values of tachyon and phantom decrease with time.

引用

页数：10

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