标题： 大N重子的自旋-味结构 显示英文标题

标题： Spin-Flavor Structure of Large N Baryons

摘要： 大N重子的自旋-味结构在QCD的1/N展开中使用夸克算符进行描述。 获得了一组完整的夸克算符恒等式，并用于推导出一个算符约化规则，该规则简化了1/N展开。 该算符约化规则应用于轴向电流、质量、磁矩和超子非轻子衰变振幅，在$SU(3)$极限下，一阶$SU(3)$破缺情况下，并且不假设$SU(3)$对称性。 讨论了Skyrme表示和夸克表示之间的联系。 给出了在两味情况下，所有阶次的$1/\N$中，以Skyrme模型算符形式表示的夸克模型算符的显式公式。 显示英文摘要

摘要： The spin-flavor structure of large N baryons is described in the 1/N expansion of QCD using quark operators. The complete set of quark operator identities is obtained, and used to derive an operator reduction rule which simplifies the 1/N expansion. The operator reduction rule is applied to the axial currents, masses, magnetic moments and hyperon non-leptonic decay amplitudes in the $SU(3)$ limit, to first order in $SU(3)$ breaking, and without assuming $SU(3)$ symmetry. The connection between the Skyrme and quark representations is discussed. An explicit formula is given for the quark model operators in terms of the Skyrme model operators to all orders in $1/\N$ for the two flavor case.