夸克胶子等离子体的介电函数

Dielectric Function of a Quark Gluon Plasma

用硬热圈重求和方法计算了夸克胶子等离子体的介电函数,结果显示硬热圈重求和计算对硬热圈近似结果有非平庸的修正.从胶子自能与介电函数的关系的角度出发,分析了介电函数的非平庸修正的物理机制,讨论了介电函数的性质.

With the hard thermal loop resummation（HTLR） technique, we calculate the dielectric function excited by hard gluon in quark gluon plasm（QGP）. We find that the corrective contribution of the dielectric function to the HTLA result is nontrival. We also analyze the physical mechanism of the nontrival corrective contribution of the dielectric function from the relation between the dielectric function and the gluon self - energy.