Reconstructing dark energy potentials from parameterized deceleration parameters

被引：14
|
作者：
Wang Yu-Ting [1 ]
Xu Li-Xin [1 ]
Lue Jian-Bo [1 ]
Gui Yuan-Xing [1 ]
机构：
[1] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
来源：
CHINESE PHYSICS B | 2010年 / 19卷 / 01期
基金：
高等学校博士学科点专项科研基金; 中国国家自然科学基金;
关键词：
dark energy(DE); deceleration parameter; reconstructed potential; COSMOLOGICAL CONSEQUENCES; ACCELERATING UNIVERSE; CONSTRAINTS; EQUATION; SUPERNOVAE; COMPONENT; DYNAMICS; DENSITY; MODELS;
D O I：
10.1088/1674-1056/19/1/019801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, the properties of dark energy are investigated according to the parameterized deceleration parameter q(z), which is used to describe the extent of the accelerating expansion of the universe. The potential of dark energy V(phi) and the cosmological parameters, such as the dimensionless energy density Omega(phi), Omega(m), and the state parameter w(phi), are connected to it. Concretely, by giving two kinds of parameterized deceleration parameters q(z) = a + bz/(1 + z) and q(z) = 1/2+(az + b)/(1 + z)(2), the evolution of these parameters and the reconstructed potentials V(phi) are plotted and analysed. It is found that the potentials run away with the evolution of universe.
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页数：5
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