论文标题
复杂的典当理论中的互动鬼暗能
Interacting Ghost Dark Energy in Complex Quintessence Theory
论文作者
论文摘要
我们采用幽灵模型来相互作用的暗能量，以在复杂的典型理论中获得FRW宇宙中幽灵能量密度的状态ω方程。我们重建潜力并研究描述复杂典型宇宙学的标量场的动力学。我们对非相互作用和相互作用的情况进行ω-ω的分析和稳定性分析，发现与真实模型相同的基本结论，其中ω'=dΩ/dlna。考虑到复杂部分的效果，并假设典型场的实际部分是“缓慢的”字段，我们得出结论，非交互模型无法描述真实的宇宙，因为这将导致分数能量密度ω_d> 1，其中ω_d可以定义为ρ_d至ρ_d到ρ_的比率。但是，对于相互作用的情况，如果我们采用当前的ω_d= 0.73，则可以确定B^2 = 0.0849，其中B^2是物质和暗能量之间的相互作用耦合参数。在实际的典型模型中，ω_d和b^2是独立参数，而在复杂的典型模型中，我们得出结论，这两个参数之间存在关系。
We employ a ghost model of interacting dark energy to obtain the equation of state ωfor ghost energy density in an FRW universe in complex quintessence theory. We reconstruct the potential and study the dynamics of the scalar field that describes complex quintessence cosmology. We perform ω-ω' analysis and stability analysis for both non-interacting and interacting cases and find that the same basic conclusion as for the real model, where ω' = dω/dlna. Taking account of the effect of the complex part and assuming the real part of the quintessence field to be a "slow-rolling" field, we conclude that the non-interacting model cannot describe the real universe since this will lead to fractional energy density Ω_D > 1, where Ω_D can be defined as the ratio of ρ_D to ρ_{cr}. However, for the interacting case, if we take present Ω_D = 0.73, then we can determine that b^2 = 0.0849, where b^2 is the interaction coupling parameter between matter and dark energy. In the real quintessence model, Ω_D and b^2 are independent parameters, whereas in the complex quintessence model, we conclude that there is a relationship between these two parameters.
