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QUANTIZATION OF LIE BIALGEBRAS, PART VI: QUANTIZATION OF GENERALIZED KAC-MOODY ALGEBRAS

机译:李双代数的量化,第六部分:广义KAC-穆迪代数的量化

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摘要

This paper is a continuation of the series of papers "Quantization of Lie bialgebras (QLB) I-V". We show that the image of a Kac-Moody Lie bialgebra with the standard quasitriangular structure under the quantization functor defined in QLB-I,II is isomorphic to the Drinfeld-Jimbo quantization of this Lie bialgebra, with the standard quasitriangular structure. This implies that when the quantization parameter is formal, then the category O for the quantized Kac-Moody algebra is equivalent, as a braided tensor category, to the category O over the corresponding classical Kac-Moody algebra, with the tensor category structure defined by a Drinfeld associator. This equivalence is a generalization of the functor constructed previously by G. Lusztig and the second author. In particular, we answer positively a question of Drinfeld whether the characters of irreducible highest weight modules for quantized Kac-Moody algebras are the same as in the classical case. Moreover, our results are valid for the Lie algebra g(A) (it was previously proved by Varchenko using integral formulas for solutions of the KZ equations).
机译:本文是一系列论文“李双代数(QLB)I-V的量化”的延续。我们表明,在QLB-1,II中定义的量化函子下,具有标准拟三角结构的Kac-Moody Lie代数图像与具有标准拟三角结构的这个Lie代数的Drinfeld-Jimbo量化同构。这意味着,当量化参数为形式参数时,量化的Kac-Moody代数的类别O作为编织张量类别,相当于对应的经典Kac-Moody代数上的类别O,张量类别结构定义为Drinfeld合伙人。这种对等是对以前由G. Lusztig和第二作者构造的函子的推广。特别是,我们肯定地回答了Drinfeld的问题,即量化Kac-Moody代数的不可约最高权重模块的特征是否与经典情况相同。此外,我们的结果对于李代数g(A)是有效的(Varchenko先前使用积分公式对KZ方程的解进行了证明)。

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