Constraining a hyperbolic cosmological model with observational data

被引:0
|
作者
Koussour, M. [1 ]
Bekov, S. [2 ,3 ]
Altaibayeva, A. [2 ]
Holmurodov, F. [4 ,5 ]
Muminov, S. [6 ]
Rayimbaev, J. [5 ,7 ,8 ,9 ]
机构
[1] Univ Hassan II Casablanca, Dept Phys, Casablanca, Morocco
[2] LN Gumilyov Eurasian Natl Univ, Dept Gen & Theoret Phys, Astana 010008, Kazakhstan
[3] Kozybayev Univ, Petropavlovsk 150000, Kazakhstan
[4] Namangan State Univ, Fac Math, Boburshoh Str 161, Namangan 160107, Uzbekistan
[5] Natl Res Univ TIIAME, Inst Fundamental & Appl Res, Kori Niyoziy 39, Tashkent 100000, Uzbekistan
[6] Urgench State Univ, Kh Alimjan Str 14, Urgench 221100, Uzbekistan
[7] Univ Tashkent Appl Sci, Fac Comp Engn, Gavhar Str 1, Tashkent 700127, Uzbekistan
[8] Shahrisabz State Pedag Inst, Shahrisabz Str 10, Shahrisabz 181301, Uzbekistan
[9] Tashkent State Tech Univ, Univ Str 1, Tashkent 100095, Uzbekistan
关键词
Hyperbolic cosmological model; FLRW metric; Observational constraints; Transition redshift; Deceleration parameter; Quintessence; Dark energy; DARK-ENERGY; IA SUPERNOVAE; QUINTESSENCE; CONSTANT; UNIVERSE; DECELERATION; STATEFINDER; REDSHIFT;
D O I
10.1016/j.cjph.2024.07.009
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this study, we investigate the dynamic evolution of the universe through a hyperbolic cosmological model based on a spatially flat FLRW metric. By using observational datasets, including CC, Pantheon+, and BAO datasets, we constrain model parameters and examine distinct characteristics, such as the transition in the deceleration parameter. The transition redshifts are z(l) = 0.74(-0.30)(+0.28), z(l) = 0.33(-0.02)(+0.02), and z(l) = 0.36(-0.03)(+0.03) for the CC, Pantheon+, and BAO datasets, respectively. Also, the present values of the deceleration parameter are determined to be q(0) = -0.38(-0.06)(+0.06), q(0) = -0.27(-0.11)(+0.10), and q(0) = -0.29(-0.01)(+0.01) for the CC, Pantheon+, and BAO datasets, respectively. Our findings indicate quintessence-like behavior and suggest potential deviations from standard cosmological expectations. The hyperbolic model emerges as a compelling alternative, underscoring its compatibility with quintessence scenarios and shedding light on the nature of dark energy and the universe's destiny.
引用
收藏
页码:445 / 457
页数:13
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