arXiv 1003.56372010-03hep-thastro-ph.CO

Horava-Lifshitz宇宙学中的新年龄暗能量

New agegraphic dark energy in Horava-Lifshitz cosmology

Mubasher Jamil, Emmanuel N. Saridakis

备注：: 17 pages, no figures, version published at JCAP
发表信息：: JCAP 1007:028,2010
DOI：: 10.1088/1475-7516/2010/07/028

摘要：

我们调查的新年龄暗能量的情况下，在宇宙由Horava-Lifshitz引力。我们考虑详细和非详细的平衡版本的理论，我们施加一个任意的曲率，我们允许的物质和暗能量部门之间的相互作用。提取了暗能量密度参数演化的微分方程，并对暗能量状态方程参数进行了展开，计算了当前暗能量和低红移值随当前暗能量和曲率密度参数、Horava-Lifshitz运行参数$λ$、新年龄暗能量参数$n$和相互作用耦合$b$的变化。我们发现，$w_0=-0.82^{+0.08}_{-0.08}$和$w_1=0.08^{+0.09}_{-0.07}$。虽然这一分析表明，该方案可以与观测兼容，但它并没有启发关于Horava-Lifshitz引力可能的概念和理论问题的讨论。

英文摘要：

We investigate the new agegraphic dark energy scenario in a universe governed by Horava-Lifshitz gravity. We consider both the detailed and non-detailed balanced version of the theory, we impose an arbitrary curvature, and we allow for an interaction between the matter and dark energy sectors. Extracting the differential equation for the evolution of the dark energy density parameter and performing an expansion of the dark energy equation-of-state parameter, we calculate its present and its low-redshift value as functions of the dark energy and curvature density parameters at present, of the Horava-Lifshitz running parameter $λ$, of the new agegraphic dark energy parameter $n$, and of the interaction coupling $b$. We find that $w_0=-0.82^{+0.08}_{-0.08}$ and $w_1=0.08^{+0.09}_{-0.07}$. Although this analysis indicates that the scenario can be compatible with observations, it does not enlighten the discussion about the possible conceptual and theoretical problems of Horava-Lifshitz gravity.

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