标题： 弱耦合和强耦合下的广义夸克-反夸克势 显示英文标题

标题： Generalized quark-antiquark potential at weak and strong coupling

摘要： 我们研究了N=4超对称杨-米尔斯理论中一个双参数的威尔逊环算符族，它在1/2 BPS线或圆与一对反向平行线之间平滑地进行插值。这些可观测量捕捉了夸克-反夸克势的一种自然推广。我们在规范理论侧将这些环计算到微扰理论的二阶，在弦理论中则进行半经典展开到一环阶。所得行列式以积分形式给出，可以针对参数的一般值进行数值计算，或在1/2 BPS配置附近进行系统展开进行解析计算。我们讨论了为这些威尔逊环推导所有环结果的可行性。 显示英文摘要

摘要： We study a two-parameter family of Wilson loop operators in N=4 supersymmetric Yang-Mills theory which interpolates smoothly between the 1/2 BPS line or circle and a pair of antiparallel lines. These observables capture a natural generalization of the quark-antiquark potential. We calculate these loops on the gauge theory side to second order in perturbation theory and in a semiclassical expansion in string theory to one-loop order. The resulting determinants are given in integral form and can be evaluated numerically for general values of the parameters or analytically in a systematic expansion around the 1/2 BPS configuration. We comment about the feasibility of deriving all-loop results for these Wilson loops.