Graph theoretical approach to the evaluation of matrix elements of onehyphen;body operators inSU(n)

摘要

A graph theoretical formulation ofSNadapted irreducible representations (irrep) ofSU(n) is presented. Closed form expressions involving onlySNandSU(n) irrep labels are derived for the matrix elements of onehyphen;body operators in the unitary group approach based on the group generators.