论文标题
以色列 - 斯图尔特与一阶因果关系和稳定的流体动力学之间的对应关系，用于膨胀富含粒子的颗粒质量
Correspondence between Israel-Stewart and first-order causal and stable hydrodynamics for Bjorken-expanding baryon-rich systems with vanishing particle masses
论文作者
论文摘要
我们在以色列 - 史蒂特（IS）理论中的动力学方程与一阶因果和稳定（焦点）流体动力学之间获得了确切的对应关系，用于增强不变的系统，具有有限的巴里昂化学势能状态的理想气体方程。根据动力学系数和IS理论的恒定松弛时间，给出了调节剂在焦点理论中温度和化学势依赖性的明确表达。使用IS和焦点理论之间的对应关系，应用了焦点方法中已知的带电流体的稳定性条件，并发现认为IS理论认为是不稳定的。
We obtain an exact correspondence between the dynamical equations in Israel-Stewart (IS) theory and first-order causal and stable (FOCS) hydrodynamics for a boost-invariant system with an ideal gas equation of state at finite baryon chemical potential. Explicit expressions for the temperature and chemical potential dependence of the regulators in the FOCS theory are given in terms of the kinetic coefficients and constant relaxation time of the IS theory. Using the correspondence between the IS and FOCS theory, stability conditions for a charged fluid which are known in the FOCS approach are applied and one finds that the IS theory considered is unstable.
