宇宙演化中可能的Negative Pressure态
Possible Negative Pressure States in the Evolution of the Universe
摘要：
在考虑界面与稀薄效应的非线性耦合的基础上，对弹性表面波在柔性真空-物质界面上传播引起的物质卷吸进行了流体动力学推导。与二阶（单位）体强迫和雷诺数（代表粘性耗散）的乘积相关的临界回流值随着克努森数（代表稀疏测量）从零增加到0.1而减小。我们得到了临界边界的物质冻结或零体积流率状态对应于特定的雷诺数（波惯性和粘性耗散效应的比率）和波数，这可能与宇宙的演化。我们的结果还表明，对于正演化的物质（气体）的最大速度出现在中心线）可能存在的负压。
英文摘要：
Hydrodynamic derivation of the entrainment of matter induced by a surface elastic wave propagating along the flexible vacuum-matter interface is conducted by considering the nonlinear coupling between the interface and the rarefaction effect. The critical reflux values associated with the product of the second-order (unit) body forcing and the Reynolds number (representing the viscous dissipations) decrease as the Knudsen number (representing the rarefaction measure) increases from zero to 0.1. We obtained the critical bounds for matter-freezed or zero-volume-flow-rate states corresponding to specific Reynolds numbers (ratio of wave inertia and viscous dissipation effects) and wave numbers which might be linked to the evolution of the Universe. Our results also show that for positive evolution of the matter (the maximum speed of the matter (gas) appears at the center-line) there might be existence of negative pressure.
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