标题： N=2超对称QCD中的电荷分数化 显示英文标题

标题： Charge fractionization in N=2 supersymmetric QCD

摘要： 文中指出，在$N=2$超对称 QCD 的超对称代数中心荷中出现的物理上的“夸克数”电荷可以取无理数值，并且非平凡地依赖于 Higgs 期望值。这为“电”和“磁”变量$a_D$和$a$在环绕奇点时经历的常数位移提供了物理解释，并表明该模型中的对偶性确实是电-磁-夸克数对偶。此外，还包括了在微观理论中直接计算单值矩阵的结果。 显示英文摘要

摘要： It is shown that the physical ``quark number'' charges which appear in the central charge of the supersymmetry algebra of $N=2$ supersymmetric QCD can take irrational values and depend non trivially on the Higgs expectation value. This gives a physical interpretation of the constant shifts which the ``electric'' and ``magnetic'' variables $a_D$ and $a$ undergo when encircling a singularity, and show that duality in this model is truly an electric-magnetic-quark number duality. Also included is a computation of the monodromy matrices directly in the microscopic theory.