Title: Coulomb Energy, Vortices, and Confinement Show Chinese title

Title: 库仑能量，涡旋与禁闭

Abstract: We estimate the Coulomb energy of static quarks from a Monte Carlo calculation of the correlator of timelike link variables in Coulomb gauge. We find, in agreement with Cucchieri and Zwanziger, that this energy grows linearly with distance at large quark separations. The corresponding string tension, however, is several times greater than the accepted asymptotic string tension, indicating that a state containing only static sources, with no constituent gluons, is not the lowest energy flux tube state. The Coulomb energy is also measured on thermalized lattices with center vortices removed by the de Forcrand-D'Elia procedure. We find that when vortices are removed, the Coulomb string tension vanishes. Show Chinese abstract

Abstract: 我们通过计算库仑规范下时轴链接变量关联函数的蒙特卡洛结果来估算静态夸克的库仑能。 我们发现，与Cucchieri和Zwanziger一致，该能量在大夸克分离距离下随距离线性增长。 然而，相应的弦张力比公认的渐近弦张力大几倍，这表明只含静态源（无组成胶子）的状态并不是最低能量的流管态。 库仑能也在中心涡旋被de Forcrand-D'Elia过程从热化格点上去除的情况下进行了测量。 我们发现，当涡旋被去除时，库仑弦张力消失。