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arXiv math/9912009math.QA
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有限维半单李代数动力学r-矩阵的显式量子化

Explicit quantization of dynamical r-matrices for finite dimensional semisimple Lie algebras

Pavel Etingof, Travis Schedler, Olivier Schiffmann

摘要:

本文给出了半单李代数的动力学r-矩阵的一个显式量子化,其中包括Belavin-Drinfeld r-矩阵.我们通过在Drinfeld-Jimbo量子群U_q(g)的张量平方中构造一个适当的(动力学)扭曲来实现,它将U_q(g)的R-矩阵扭曲成所需的量子化。这种扭曲的构造是基于源自Jimbo-Konno-Odake-Shiraishi和Arnaudon-Buffenoir-Ragoucy-Roche的工作的方法,即将扭曲定义为合适的差分方程的唯一解。这就产生了一个简单的扭转闭公式。这种构造允许人们确认Gerstenhaber-Giaquinto-Schack猜想的替代版本(关于向量表示中sl(n)的Belavin-Drinfeld r-矩阵的量化),这是第二作者在计算机证据的基础上提出的。它还允许定义与半单李代数相关的新量子群。我们期望它们具有丰富的结构和有趣的表示论。

英文摘要:

We provide an explicit quantization of dynamical r-matrices for semisimple Lie algebras, classified earlier by the third author, which includes the Belavin-Drinfeld r-matrices. We do so by constructing an appropriate (dynamical) twist in the tensor square of the Drinfeld-Jimbo quantum group U_q(g), which twists the R-matrix of U_q(g) into the desired quatization. The construction of this twist is based on the method stemming from the work of Jimbo-Konno-Odake-Shiraishi and Arnaudon-Buffenoir-Ragoucy-Roche, i.e. on defining the twist as a unique solution of a suitable difference equation. This yields a simple closed formula for the twist. This construction allows one to confirm the alternate version of the Gerstenhaber-Giaquinto-Schack conjecture (about quantization of Belavin-Drinfeld r-matrices for sl(n) in the vector representation), which was stated earlier by the second author on the basis of computer evidence. It also allows one to define new quantum groups associated to semisimple Lie algebras. We expect them to have a rich structure and interesting representation theory.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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