2-圈量子杨-米尔斯凝聚的暗能量
2-loop Quantum Yang-Mills Condensate as Dark Energy
摘要：
在寻找解决符合问题的模型时，有效杨-米尔斯凝聚（YMC）是暗能量的另一个候选者。研究了直到2圈阶量子修正的模型。据发现，像在1-loop模型，在辐射时代的一般初始条件下，总是有一个所需的跟踪解决方案，产生当前状态$Ω_Λ\simeq 0.73$和$Ω_m \simeq 0.27$。当时间为$t\to \infty$时，动力学是一个稳定的吸引子.因此，该模型自然地解决了暗能量的符合问题。此外，如果YMC衰变为物质，其状态方程（EoS）将穿过-1并取$w\sim -1.1$，如最近的观测所示。
英文摘要：
In seeking a model solving the coincidence problem, the effective Yang-Mills condensate (YMC) is an alternative candidate for dark energy. A study is made for the model up to the 2-loop order of quantum corrections. It is found that, like in the 1-loop model, for generic initial conditions during the radiation era, there is always a desired tracking solution, yielding the current status $Ω_Λ\simeq 0.73$ and $Ω_m \simeq 0.27$. As the time $t\to \infty$ the dynamics is a stable attractor. Thus the model naturally solves the coincidence problem of dark energy. Moreover, if YMC decays into matter, its equation of state (EoS) crosses -1 and takes $w\sim -1.1$, as indicated by the recent observations.
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