Can we constrain the dark energy equation of state parameters using configuration entropy?

被引：2
|
作者：
Das, Biswajit [1 ]
Pandey, Biswajit [1 ]
机构：
[1] Visva Bharati Univ, Dept Phys, Santini Ketan 731235, Birbhum, India
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2020年 / 492卷 / 03期
关键词：
methods: analytical; cosmology: dark energy; cosmology: theory; large-scale structure of Universe; H I; COSMOLOGICAL CONSTANT; INFORMATION; COMPONENT; PROBE;
D O I：
10.1093/mnras/stz3538
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We propose a new scheme for constraining the dark energy equation of state parameter/parameters based on the study of the evolution of the configuration entropy. We analyse a set of one-parameter and two-parameter dynamical dark energy models and find that the derivative of the configuration entropy in all the dynamical dark energy models exhibits a minimum. The magnitude of the minimum of the entropy rate is decided by both the parametrization of the equation of state and the associated parameters. The location of the minimum of the entropy rate is less sensitive to the form of the parametrization but depends on the associated parameters. We determine the best-fitting equations for the location and magnitude of the minimum of the entropy rate in terms of the parameter/parameters of the dark energy equation of state. These relations would allow us to constrain the dark energy equation of state parameter/parameters for any given parametrization provided the evolution of the configuration entropy in the Universe is known from observations.
引用
收藏
页码：3928 / 3939
页数：12
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