论文标题
磁化强烈耦合的一组分等离子体的粘度
Viscosity of the magnetized strongly coupled one-component plasma
论文作者
论文摘要
使用平衡分子动力学模拟和绿色kubo关系计算磁化单分量等离子体的粘度张量，由五个独立的剪切粘度系数，散装粘度系数和跨系数组成。研究了广泛的库仑耦合和磁化强度条件。当陀螺频率超过库仑碰撞频率时，发现磁化强烈影响剪切粘度系数。三个方案被确定为库仑耦合强度和磁化强度各不相同。绿色kubo关系用于将每个粘度系数的动能和势能贡献分开，表明每个贡献如何取决于磁化强度。与与磁场平行的应力张量的分量相关的剪切粘度系数，并且发现与垂直于磁场的分量相关的两个系数都被发现在强库仑耦合时合并为共同值。
The viscosity tensor of the magnetized one-component plasma, consisting of five independent shear viscosity coefficients, a bulk viscosity coefficient, and a cross coefficient, is computed using equilibrium molecular dynamics simulations and the Green-Kubo relations. A broad range of Coulomb coupling and magnetization strength conditions are studied. Magnetization is found to strongly influence the shear viscosity coefficients when the gyrofrequency exceeds the Coulomb collision frequency. Three regimes are identified as the Coulomb coupling strength and magnetization strength are varied. The Green-Kubo relations are used to separate kinetic and potential energy contributions to each viscosity coefficient, showing how each contribution depends upon the magnetization strength. The shear viscosity coefficient associated with the component of the stress tensor parallel to the magnetic field, and the two coefficients associated with the component perpendicular to the magnetic field, are all found to merge to a common value at strong Coulomb coupling.
