论文标题
完美的流体，具有剪切粘度和时空进化
Perfect fluid with shear viscosity and spacetime evolution
论文作者
论文摘要
我们研究了时空的各向异性演变，该时期由完美的流体驱动，并具有脱节剪切粘度成分。我们认为流体方程的最简单形式，为此，压力和剪切应力与能量密度成正比。在后期，与通常的弗里德曼宇宙相比，我们发现，由于能量密度的下降速度越快，由于转移到剪切应力，时空的扩张速度降低。有趣的是，对于状态方程参数的某些范围，我们发现可以删除最初的大键奇异性。
We investigate the anisotropic evolution of spacetime driven by perfect fluid with off-diagonal shear-viscosity components. We consider the simplest form of the equation of state for fluid, for which the pressure and the shear stress are proportional to the energy density individually. At late times, compared with the usual Friedmann universe, we find that the spacetime expands less rapidly as the energy density drops faster due to the transfer to the shear stress. Very interestingly, for some ranges of the equation-of-state parameters, we find that the initial big-bang singularity can be removed.
