arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0801.0280astro-ph
收藏

重建暗能量全息模型中的相互作用率

Reconstructing the interaction rate in holographic models of dark energy

Anjan A. Sen, Diego Pavon

摘要:

利用Ia型超新星、重子声学振荡、星系团中气体质量分数和增长因子的观测数据,重建了Zimdahl和Pavón \cite{wd}最近提出的全息暗能量模型在红移区间$0 < z < 1.8$内的相互作用率.它显示了一个合理的行为,在这个意义上,它从很久以前的一个小值或零值开始随着膨胀而增加,但在最近开始减少。后一个特征表明,暗能量的状态参数方程并没有跨越幻影鸿沟。

英文摘要:

We reconstruct the interaction rate of the holographic dark energy model recently proposed by Zimdahl and Pavón \cite{wd} in the redshift interval $0 < z < 1.8$ with observational data from supernovae type Ia, baryon acoustic oscillations, gas mass fraction in galaxy clusters, and the growth factor. It shows a reasonable behavior in the sense that it increases with expansion from a small or vanishing value in the long past but starts decreasing at recent times. The later feature suggests that the equation of state parameter of dark energy does not cross the phantom divide.

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。

↑