Density operator formalism for spin systems with permutation symmetry in multiple pulse and 2D NMR experiments(ⅱ)& multiple quantum product operator formalism 自旋置换对称体系多脉冲及二维核磁共振实验的密度算符描述(Ⅱ)&多量子积算符方法
The expectation value of the permutation operator of the spin-flavor-color space is a very important quantity to measure the quark exchange effect. 对一给定的双重子态其夸克效应的性质由自旋、味道和色空间置换算符在该态的矩阵元决定。
This is a permutation problem, for which the traditional genetic crossover operator results in repetition of gates. 由于门阵列布局是一排列问题,传统的遗传杂交会导致门的重复,因此必须对传统的遗传算法进行修改。