标题： 具有完美流体和暗能量的各向异性宇宙学模型的重新审视 显示英文标题

标题： Anisotropic cosmological models with perfect fluid and dark energy revisited

摘要： 我们考虑一个自洽的Bianchi类型-I (BI)引力场与完美流体和暗能量的二元混合物系统。 完美流体被取为遵循通常方程状态的流体，即$p = \zeta \ve$，其中$\zeta \in [0, 1]$，而暗能量则被认为遵循类似量子能方程状态。 得到了相应爱因斯坦方程的精确解。 所考虑的模型产生了一个空间有限的宇宙。 根据问题参数的选择，宇宙要么是闭合的且具有时空奇点，要么是开放的、振荡的、在时间上无限的。 显示英文摘要

摘要： We consider a self-consistent system of Bianchi type-I (BI) gravitational field and a binary mixture of perfect fluid and dark energy. The perfect fluid is taken to be the one obeying the usual equation of state, i.e., $p = \zeta \ve$, with $\zeta \in [0, 1]$ whereas, the dark energy is considered to be obeying a quintessence-like equation of state. Exact solutions to the corresponding Einstein equations are obtained. The model in consideration gives rise to a Universe which is spatially finite. Depending on the choice of problem parameters the Universe is either close with a space-time singularity, or an open one which is oscillatory, regular and infinite in time.