Theoretical analysis on the Renyi holographic dark energy in the fractal cosmology

被引：3
作者：
Zhang, Sibo [1 ]
Qi, Yannan [1 ]
Yang, Weiqiang [1 ]
Zhao, Chenchen [1 ]
Feng, Wenyu [1 ]
Jiang, Bo [1 ]
机构：
[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China
来源：
MODERN PHYSICS LETTERS A | 2022年 / 37卷 / 39-40期
基金：
中国国家自然科学基金;
关键词：
Fractal cosmology; holographic dark energy; statefinder diagnostic; MODEL; CONSTANT; UNIVERSE;
D O I：
10.1142/S0217732322502509
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this paper, we investigate the Renyi holographic dark energy model with the interaction between dark energy and dark matter within the framework of the fractal cosmology in which the Hubble horizon is considered as the IR cutoff. In this setting, we derive the evolution equation of the Renyi holographic dark energy density parameter, the equation of state (EoS) parameter and deceleration parameter. We find that the model in the fractal cosmology can explain the accelerated expansion of the universe. In addition, we discuss the statefinder diagnosis of this model, plotting the curves of r and s with redshift z and the evolutionary trajectories of r - s. We find that statefinder can ideally break the degeneracy of different coupling parameter values in this model. Moreover, we find that the statefinder pair S-3((2)) performs better than S-3((1)) and r - s in this model.
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页数：16
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