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arXiv 0911.0264hep-th
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重新审视了非紧凑型WZNW车型

Gauged non-compact WZNW models, revisited

Jonas Bjornsson, Stephen Hwang

摘要:

本文的目的是深入研究非紧规范WZNW模型谱的么正性的必要条件。特别是,我们想研究整数权重和水平的必要性。我们会知道这个问题是非常复杂的,我们没有找到任何简单和通用的方法来制定必要的条件。相反,人们必须诉诸于几乎逐个案例地研究问题。我们将找到的唯一接近完全的条件是g = su(n,1)的情况。此外,情况g = su(p,q)的水平部分也几乎完成。在其他情况下,我们会发现与Dynkin图中的某些子代数和节点相关的条件接近于对应于非紧根的条件。在这些例子中,我们可以给出代数的水平部分的条件。作为我们研究的副产品,我们将证明这些表示的特征恒等式和显式分支函数的一些很好的公式。

英文摘要:

The purpose of the present paper is to investigate the necessary conditions for unitarity of the spectrum of non-compact gauged WZNW models to some depth. In particular, we would like to investigate the necessity of integer weights and level. We will learn that the problem is very complex and we have not found any simple and general way to formulate the necessary conditions. Instead one must resort to studying the problem almost case by case. The only nearly complete conditions that we will find, is for the case g = su(n,1). Furthermore, the horizontal part of the case g = su(p,q) is nearly completed as well. In other cases, we will find conditions associated with certain subalgebras and nodes in the Dynkin diagram close to the one corresponding to the non-compact root. In these examples we can give conditions for the horizontal part of the algebra. As a by-product of our investigation we will prove some nice formulae of character identities and explicit branching functions for these representations.

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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