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arXiv 0903.0617astro-ph.COgr-qchep-phhep-th
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物质密度不确定性对暗能量重建的影响

Impact of the matter density uncertainty on the dark energy reconstruction

P. P. Avelino

摘要:

本文研究了分数物质密度不确定性对重建暗能量状态方程的影响。我们认为这两个标准的重建方法,基于动力学效应,暗能量对宇宙的膨胀,以及非标准的方法,其中的暗能量状态方程的红移的演变推断通过基本耦合的变化,如精细结构常数,$α$,或质子与电子的质量比,$μ$。我们表明,在暗能量重建使用不同的耦合的物质密度的不确定性的负面影响可能是非常小的标准重建方法相比。我们还简要讨论了在成功使用不同的耦合来探测暗能量的本质之前需要回答的其他基本问题。

英文摘要:

In this paper we study the impact of the fractional matter density uncertainty in the reconstruction of the equation of state of dark energy. We consider both standard reconstruction methods, based on the dynamical effect that dark energy has on the expansion of the Universe, as well as non-standard methods, in which the evolution of the dark energy equation of state with redshift is inferred through the variation of fundamental couplings such as the fine structure constant, $α$, or the proton-to-electron mass ratio, $μ$. We show that the negative impact of the matter density uncertainty in the dark energy reconstruction using varying couplings may be very small compared to standard reconstruction methods. We also briefly discuss other fundamental questions which need to be answered before varying couplings can be successfully used to probe the nature of the dark energy.

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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