论文标题
各向同性压力条件的稳定性
Stability of the isotropic pressure condition
论文作者
论文摘要
我们研究了各向同性压力条件（在球形对称的耗散流体分布）中的稳定性条件。发现耗散通量和/或能量密度不均匀性和/或剪切在流体流中的出现，迫使任何最初的各向同性构型放弃这种情况，从而在压力中产生各向异性。为了加强这一结论，我们还提出了有关轴向对称情况的一些论点。随之而来的结果分析了。
We investigate the conditions for the (in)stability of the isotropic pressure condition in collapsing spherically symmetric, dissipative fluid distributions. It is found that dissipative fluxes, and/or energy density inhomogeneities and/or the appearance of shear in the fluid flow, force any initially isotropic configuration to abandon such a condition, generating anisotropy in the pressure. To reinforce this conclusion we also present some arguments concerning the axially symmetric case. The consequences ensuing our results are analyzed.
