A note on recoupling coefficients for SU(3)

A note on recoupling coefficients for SU(3)
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关于 SU(3) 重耦合系数的注释

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发表时间:
1978
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通讯作者:
D. Millener
D. Millener
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作者:
D. Millener

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定义了一个不同于通常U系数的6-(λμ)系数,用Z表示,它与SU(3)的三个不可约表示的特殊再耦合有关.一个一般的9-(λμ)系数,类似于角动量拉卡代数的酉9-J系数,然后用Z系数和两个U系数表示。通过这种方式,与SU(3)不可约表示的乘积中存在外部多重性相关的问题被规避了。
A 6‐ (λμ) coefficient, denoted by Z and different from the usual U coefficient, associated with a specific recoupling of three irreducible representations of SU(3), is defined. A general 9‐ (λμ) coefficient, analogous to the unitary 9‐J coefficient of the angular momentum Racah algebra, is then expressed in terms of the Z coefficient and two U coefficients. In this way problems associated with the existence of outer multiplicities in the products of irreducible representations of SU(3) are circumvented.