论文标题
具有秩序参数的无耗散流体动力学的熵产生
Entropy Production in Dissipationless Hydrodynamics with an order parameter
论文作者
论文摘要
我们研究基于线性Sigma模型的订购参数的流体动力学。我们获得了增强不变和非增强溶液的数值解。两种解决方案均显示了振荡的顺序参数，该参数持续在很晚。温度以相关的振荡下降，可以通过中高度的功率定律近似。我们还发现熵是在增强不变的情况下保守的，但是在非增强溶液中可以看到熵产生。我们将熵的产生解释为在平衡状态下不均匀性的平稳。
We study hydrodynamics coupled to order parameter based on linear sigma model. We obtain numerical solutions for both boost invariant and non-boost invariant solutions. Both solutions show the order parameter rises with oscillations, which persist at late time. The temperature drops with correlated oscillations, which can be approximated by a power law at mid-rapidity. We also find the entropy is conserved in the boost invariant case, but entropy production is seen in non-boost invariant solution. We interpret the entropy production as due to smoothening of inhomogeneity in the off-equilibrium state.
