Constraints on the unified model of dark matter and dark energy

被引：7
|
作者：
Lue Jian-Bo [1 ]
Wu Ya-Bo [1 ]
Xu Li-Xin [2 ]
Wang Yu-Ting [2 ]
机构：
[1] Liaoning Normal Univ, Dept Phys, Dalian 116029, Peoples R China
[2] Dalian Univ Technol, Sch Phys & Optoelect Technol, Dalian 116024, Peoples R China
来源：
CHINESE PHYSICS B | 2011年 / 20卷 / 07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：
generalized Chaplygin gas; unification of dark matter and dark energy; GENERALIZED CHAPLYGIN-GAS; DIGITAL SKY SURVEY; FIELD ELLIPTIC GALAXIES; EQUATION-OF-STATE; COSMOLOGICAL PARAMETERS; ACCELERATING UNIVERSE; INTERMEDIATE REDSHIFT; ANALYTIC APPROACH; HUBBLE CONSTANT; RED GALAXIES;
D O I：
10.1088/1674-1056/20/7/079801
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using recently observed data: the Constitution dataset of type supernovae Ia (SNIa), the observational Hubble data (OHD), the measurement results of baryon acoustic oscillation (BAO) from the Sloan Digital Sky Survey (SDSS) and the Two Degree Field Galaxy Redshift Survey (2dFGRS), and the current cosmic microwave background (CMB) data from the five-year Wilkinson Microwave Anisotropy Probe (WMAP), we apply the Markov Chain Monte Carlo method to investigate the observational constraints on the generalized Chaplygin gas (GCG) model as the unification of dark matter and dark energy. For this unified model, the constraints on GCG mixture are discussed by considering the different expressions of current matter density or considering constraints as being independent of the matter quantity Omega(m).
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页数：7
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