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A numerical analysis for FRW universe in f(R, T) gravity
被引:4
|作者:
Sofuoglu, Deger
[1
]
Akilli, Mahmut
[2
]
机构:
[1] Istanbul Univ, Dept Phys, TR-34134 Istanbul, Turkey
[2] Istanbul Arel Univ, Med Imaging Tech Vocat Sch, TR-34295 Istanbul, Turkey
来源:
INTERNATIONAL JOURNAL OF MODERN PHYSICS D
|
2022年
/
31卷
/
02期
关键词:
f(R;
T);
Gravity;
FRW model;
numerical analysis;
Hubble parameter;
COSMOLOGICAL MODEL;
DARK ENERGY;
LAMBDA;
PARAMETERS;
SUPERNOVAE;
CONSTANT;
OMEGA;
D O I:
10.1142/S0218271822500055
中图分类号:
P1 [天文学];
学科分类号:
0704 ;
摘要:
In this work, Friedmann-Robertson-Walker model is investigated in f (R,T) = R + alpha T + beta T-2 gravity for a perfect fluid by a numerical analysis. In order to solve the modified field equations, we use a new solution method based on to propose the functional forms of the energy density and the pressure. In this context, in keeping with the recent indications of the observed universe, we consider two different propositions. We show for both propositions that. the behaviors of the Hubble and the deceleration parameters are consistent with astrophysical observations and the model depicts de Sitter universe. It is also shown that the model incorporates the initial radiation-dominated era, and it is dominated by a quintessence like fluid at. late era for both the propositions.
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页数:14
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