Supernovae constraints on models of dark energy reexamined

被引:76
作者
Bento, MC
Bertolami, O
Santos, NMC
Sen, AA
机构
[1] Univ Tecn Lisboa, Dept Fis, Inst Super Tecn, P-1049001 Lisbon, Portugal
[2] Univ Tecn Lisboa, Ctr Fis Teor Particulas, Inst Super Tecn, P-1049001 Lisbon, Portugal
来源
PHYSICAL REVIEW D | 2005年 / 71卷 / 06期
关键词
D O I
10.1103/PhysRevD.71.063501
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We use the Type la Supernova gold sample data of Riess et al in order to constrain three models of dark energy. We study the Cardassian model, the Dvali-Turner gravity modified model, and the generalized Chaplygin gas model of dark energy-dark matter unification. In our best-fit analysis for these three dark energy proposals we consider the flat model and the nonflat model priors. We also discuss the degeneracy of the models with the XCDM model through the computation of the so-called jerk parameter.
引用
收藏
页码:1 / 11
页数:11
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