磁场中夸克物质的黏滞系数

Bulk Viscosity of Quark Matter in Magnetic Field

研究了磁场中夸克非轻子弱作用过程的反应率和黏滞系数．改进了在弱磁场情况下的近似计算方法,给出了非轻子过程的反应率与夸克物质的体黏滞系数的表达式,显示出在弱磁场情况下,黏滞系数的温度依赖关系与零磁场情况下一致,但黏滞系数的大小依赖磁场的强度．

The reaction rate of non-leptonic quark weak interaction and the bulk viscosity of quark matter in the magnetic field are investigated. The approximation method for calculating the reaction rate in a weak magnetic field is improved, the results of the reaction rate of non-leptonic process and the bulk viscosity of quark matter are given. It is shown that the relationship between the bulk viscosity and the temperature in the weak magnetic field case is the same as that in the zero magnetic field case, but the magnitude of bulk viscosity is affected by the strength of the magnetic field.