S4 symmetry of 6j symbols and Frobenius–Schur indicators in rigid monoidal C* categories
S4 symmetry of 6j symbols and Frobenius–Schur indicators in rigid monoidal C* categories
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刚性幺半群 C* 类别中 6j 符号和 Frobenius-Schur 指标的 S4 对称性
DOI:
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
P. Vecsernyés
中科院分区:
文献类型:
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作者:
J. Fuchs;A. Ganchev;K. Szlachányi;P. Vecsernyés
We show that a left-rigid monoidal C* category with irreducible monoidal unit is also a sovereign and spherical category. Defining a Frobenius–Schur-type indicator we obtain selection rules for the fusion coefficients of irreducible objects. As a main result we prove S4 invariance of 6j symbols in such a category.We show that a left-rigid monoidal C* category with irreducible monoidal unit is also a sovereign and spherical category. Defining a Frobenius–Schur-type indicator we obtain selection rules for the fusion coefficients of irreducible objects. As a main result we prove S4 invariance of 6j symbols in such a category.