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arXiv 0812.1070hep-th
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W-扩张对数极小模型的多项式融合环

Polynomial fusion rings of W-extended logarithmic minimal models

Jorgen Rasmussen

摘要:

对数极小模型LM(p,p ')的可数无限个Virasoro表示可以重组为关于扩展的维拉索罗代数对称性W的有限个W-表示.使用融合的格实现,我们最近确定了这些表示的融合代数,并发现它关闭,尽管p>1没有恒等式。在这里,我们给出了这个融合代数的融合矩阵实现,并确定了一个与之同构的融合环,同时考虑了它的各种扩张及其子代数,引入并分析了所涉及的融合代数与相应的商多项式融合环之间的交换图.一个特殊的扩展让人想起LM(p,p ')的基本融合代数,并提供了一种自然的方式来引入p>1时缺失的恒等式。计算显式融合矩阵的基础上,一对相互的Moore-Penrose逆交织的W-基本和扩大的融合代数之间的进一步扩大。

英文摘要:

The countably infinite number of Virasoro representations of the logarithmic minimal model LM(p,p') can be reorganized into a finite number of W-representations with respect to the extended Virasoro algebra symmetry W. Using a lattice implementation of fusion, we recently determined the fusion algebra of these representations and found that it closes, albeit without an identity for p>1. Here, we provide a fusion-matrix realization of this fusion algebra and identify a fusion ring isomorphic to it. We also consider various extensions of it and quotients thereof, and introduce and analyze commutative diagrams with morphisms between the involved fusion algebras and the corresponding quotient polynomial fusion rings. One particular extension is reminiscent of the fundamental fusion algebra of LM(p,p') and offers a natural way of introducing the missing identity for p>1. Working out explicit fusion matrices is facilitated by a further enlargement based on a pair of mutual Moore-Penrose inverses intertwining between the W-fundamental and enlarged fusion algebras.

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