论文标题
QCD临界点附近的非线性扰动的命运
The fate of nonlinear perturbations near the QCD critical point
论文作者
论文摘要
已经研究了QCD临界点对非线性波传播的影响。通过将临界点纳入状态方程以及运输系数和热力学反应函数的缩放范围，在二阶因果耗散流体动力学的范围内研究了这种效果。在临界点附近，发现非线性波被显着抑制，这可能会导致客场射流的马赫锥效应消失。这种阻尼可能导致椭圆形和较高流量系数的波动增强。因此，在事件分析中，马赫锥效应的消失和流量谐波中波动的增强可能被视为临界终点的信号。
The impact of the QCD critical point on the propagation of nonlinear waves has been studied. The effects have been investigated within the scope of second-order causal dissipative hydrodynamics by incorporating the critical point into the equation of state, and the scaling behaviour of transport coefficients and of thermodynamic response functions. Near the critical point, the nonlinear waves are found to be significantly damped which may result in the disappearance of the Mach cone effects of the away side jet. Such damping may lead to enhancement in the fluctuations of elliptic and higher flow coefficients. Therefore, the disappearance of Mach cone effects and the enhancement of fluctuations in flow harmonics in the event-by-event analysis may be considered as signals of the critical endpoint.
