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arXiv 0811.4523math.QAhep-thmath.RT
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例外顶点算子代数与Virasoro代数

Exceptional Vertex Operator Algebras and the Virasoro Algebra

Michael P. Tuite

摘要:

我们考虑特殊的顶点算子代数,其中特定的Casimir向量从最低的共形权的主要向量是Virasoro后裔的真空。我们讨论这些理论的限制,从适当的属零和属一个两点相关函数的分析。我们发现明确的微分方程的分拆函数的情况下,最低权的主要向量形成一个李代数或Griess代数。例子包括Wess-Zumino-Witten模型的Deligne的例外李代数和月光模块。部分地证明了Deligne例外李代数张量积的不可约分解,并考虑了Griess代数张量积的类似分解的可能性.本文简要地讨论了Witten最近关于三维黑洞的工作中所产生的一些有约束的极值顶点算子代数。

英文摘要:

We consider exceptional vertex operator algebras for which particular Casimir vectors constructed from the primary vectors of lowest conformal weight are Virasoro descendants of the vacuum. We discuss constraints on these theories that follow from an analysis of appropriate genus zero and genus one two point correlation functions. We find explicit differential equations for the partition function in the cases where the lowest weight primary vectors form a Lie algebra or a Griess algebra. Examples include the Wess-Zumino-Witten model for Deligne's exceptional Lie algebras and the Moonshine Module. We partially verify the irreducible decomposition of the tensor product of Deligne's exceptional Lie algebras and consider the possibility of similar decompositions for tensor products of the Griess algebra. We briefly discuss some conjectured extremal vertex operator algebras arising in Witten's recent work on three dimensional black holes.

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