Supernova constraints on a holographic dark energy model
Supernova constraints on a holographic dark energy model
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DOI：
10.1088/1475-7516/2004/08/006
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发表时间：
2004-03
影响因子：
6.4
通讯作者：
Q. Huang;Y. Gong
中科院分区：
文献类型：
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作者：
Q. Huang;Y. Gong
本文利用Ia型超新星数据对全息暗能量模型进行了约束。当d=1时，最好的拟合结果是Ωm0=0.2 5，全息暗能量状态方程wΛ0=−0.91，当宇宙红移zT=0.72时，发生减速膨胀和加速膨胀的转变.如果我们将d设置为自由参数，则最佳拟合结果是d=0.21，Ωm0=0.46，wΛ0=−2.67，这在今天听起来像是一个幻影，过渡红移是zT=0.28。
In this paper, we use the type Ia supernova data to constrain the model of holographic dark energy. For d = 1, the best fit result is Ωm0 = 0.25, the equation of the state of the holographic dark energy wΛ0 = −0.91 and the transition between the decelerating expansion and the accelerating expansion happened when the cosmological red-shift was zT = 0.72. If we set d as a free parameter, the best fit results are d = 0.21, Ωm0 = 0.46, wΛ0 = −2.67, which sounds like a phantom today, and the transition red-shift is zT = 0.28.