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arXiv 0705.1006astro-phgr-qchep-phhep-th
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相互作用全息暗能量的电流约束

Current constraints on interacting holographic dark energy

Qiang Wu, Yungui Gong, Anzhong Wang, J. S. Alcaniz

摘要:

虽然有越来越多的观测证据表明宇宙膨胀正在经历后期加速,但这种现象背后的物理机制尚不清楚。在本文中,我们研究了全息暗能量(HDE)模型与暗扇区的组件之间的相互作用,在目前的宇宙学观测的光。我们使用了新的\emph{gold}样本的182 Ia型超新星(SNe Ia)和192 SNe Ia ESSENCE数据,重子声学振荡测量从斯隆数字巡天和移动参数从三年威尔金森微波各向异性探测器的数据。与以前的结果一致,我们表明,这些观察表明一个非常弱的耦合,甚至是一个非相互作用的HDE。在这些场景的上下文中的幻影交叉行为也进行了简要讨论。

英文摘要:

Although there is mounting observational evidence that the cosmic expansion is undergoing a late-time acceleration, the physical mechanism behind such a phenomenon is yet unknown. In this paper, we investigate a holographic dark energy (HDE) model with interaction between the components of the dark sector in the light of current cosmological observations. We use both the new \emph{gold} sample of 182 type Ia supernovae (SNe Ia) and the 192 SNe Ia ESSENCE data, the baryon acoustic oscillation measurement from the Sloan Digital Sky Survey and the shift parameter from the three-year Wilkinson Microwave Anisotropy Probe data. In agreement with previous results, we show that these observations suggest a very weak coupling or even a noninteracting HDE. The phantom crossing behavior in the context of these scenarios is also briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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