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arXiv 0904.0134math.RTmath.RA
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局部仿射李代数的酉最高权模

Unitary highest weight modules of locally affine Lie algebras

Karl-Hermann Neeb

摘要:

局部仿射李代数是仿射Kac-Moody代数的推广,它具有根系是局部仿射的无限秩Cartan子代数.本文研究了局部仿射代数的一类表示,推广了可积最高权模。特别是,我们构造这样一个可积的表示为每个积分权重不消失的中心,并表明,在复数,我们从而获得酉表示w.r. t。一个单一的实形式。我们还使用Yoshii最近的局部仿射根系的分类,得到一个所谓的最小的局部仿射李代数的分类,并给出实现扭圈代数。

英文摘要:

Locally affine Lie algebras are generalizations of affine Kac--Moody algebras with Cartan subalgebras of infinite rank whose root system is locally affine. In this note we study a class of representations of locally affine algebras generalizing integrable highest weight modules. In particular, we construct such an integrable representation for each integral weight not vanishing on the center and show that, over the complex numbers, we thus obtain unitary representations w.r.t. a unitary real form. We also use Yoshii's recent classification of locally affine root systems to derive a classification of so-called minimal locally affine Lie algebras and give realizations as twisted loop algebras.

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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