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arXiv 1607.05050math-phmath.MPmath.QA
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椭圆量子代数的变形维拉索罗代数

Deformed Virasoro algebras from elliptic quantum algebras

J. Avan, L. Frappat, E. Ragoucy

摘要:

我们重新讨论了由顶点型椭圆量子代数构造变形维拉索罗代数的问题,推广了90年代提出的双线性迹方法。它使我们能够接触到在同一时期分别介绍的顶点算子技术。作为一个副产品,该方法精确地指出了两个临界值的中心荷的代数的中心是扩展的,以及(在$gl(2)$的情况下)刘维公式。

英文摘要:

We revisit the construction of deformed Virasoro algebras from elliptic quantum algebras of vertex type, generalizing the bilinear trace procedure proposed in the 90's. It allows us to make contact with the vertex operator techniques that were introduced separately at the same period. As a by-product, the method pinpoints two critical values of the central charge for which the center of the algebra is extended, as well as (in the $gl(2)$ case) a Liouville formula.

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