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arXiv 1503.08712gr-qc
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相互作用本质的动力学

Dynamics of interacting quintessence

M. Shahalam, S. D. Pathak, M. M. Verma, M. Yu. Khlopov, R. Myrzakulov

摘要:

本文研究了具有标度势的耦合本质,假设耦合的具体形式为$A$,即$α\dot{ρ_m}$,$β\dot{ρ_ϕ}$和$σ(\dot{ρ_m}+\dot{ρ_ϕ})$,并给出了三种不同相互作用模型的相空间分析。我们专注于吸引子的解决方案,可以引起后期的时间加速与$Ω_{DE}/Ω_{DM}$的顺序单位,以减轻巧合的问题。

英文摘要:

In this paper, we investigate coupled quintessence with scaling potential assuming specific forms of the coupling as $A$ namely, $α\dot{ρ_m}$, $β\dot{ρ_ϕ}$ and $σ(\dot{ρ_m}+\dot{ρ_ϕ})$, and present phase space analysis for three different interacting models. We focus on the attractor solutions that can give rise to late time acceleration with $Ω_{DE}/Ω_{DM}$ of order unity in order to alleviate the coincidence problem.

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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