Dark Energy Coupled with Dark Matter in the Accelerating Universe |
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作者姓名: | ZHANGYang |
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作者单位: | AstrophysicsCenter,UniversityofScienceandTechnologyofChina,Hefei230026 |
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摘 要: | To model the observed Universe containing both dark energy and dark matter, we study the effective Yang-Mills condensate model of dark energy and add a non-relativistic matter component as the dark matter, which is generated out of the decaying dark energy at a constant rate Г, a parameter of our model. For the Universe driven by these two components, the dynamic evolution still has asymptotic behaviour: the expansion of the Universe is accelerating with an asymptotically constant rate H, and the densities of both components approach to finite constant values. Moreover, Ω△~ 0.7 for dark energy and Ωm~0.3 for dark matter are achieved if the decay rate Г is chosen such that Г/H ~ 1.
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关 键 词: | 暗物质 暗能量耦合 Yang-Mills凝聚模型 高能物理学 天体物理学 |
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