胶子凝聚与夸克互作用势

GLUON CONDENSATE AND THE QUARK POTENTIAL

本文在夸克质量相等与不等两种情况下,计算了胶子凝聚对于微扰量子色动力学中夸克与夸克之间、夸克与反夸克之间的互作用势的非微扰修正。我们的计算结果不仅清楚地证实了线性势的存在,而且揭示了线性势本身的复杂结构;此外,我们还得到了标量立方势。

The non perturbative corrections due to the gluon condensate to the quark quark andquark antiquark potentials in perturbative Quantum Chromodynamics up to the fourth order of the strong coupling constant have been calculated for the equal and unequal mass cases. Our results clearly show that the linear potential indeed appears due to the non-perturbative property of the physical vacuum, and the complex structure of that potential is discovered. Furthemore, a spin independent cubic potential is found.