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arXiv 2102.00870math.RThep-th
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仿射Kac-Moody代数的对合子代数的表示

Representations of involutory subalgebras of affine Kac-Moody algebras

Axel Kleinschmidt, Ralf Köhl, Robin Lautenbacher, Hermann Nicolai

摘要:

我们考虑了由Chevalley对合固定的分裂实非扭曲仿射Kac-Moody李代数的子代数。这些无限维李代数不是Kac-Moody型的,并且允许有限维的不忠实表示。我们展示了这些代数的制定方面的$\mathbb{N}$ -分级李代数,允许建设的一大类表示使用的技术诱导表示。我们研究这些表示与先前建立的旋量表示,因为它们出现在超引力理论。

英文摘要:

We consider the subalgebras of split real, non-twisted affine Kac-Moody Lie algebras that are fixed by the Chevalley involution. These infinite-dimensional Lie algebras are not of Kac-Moody type and admit finite-dimensional unfaithful representations. We exhibit a formulation of these algebras in terms of $\mathbb{N}$-graded Lie algebras that allows the construction of a large class of representations using the techniques of induced representations. We study how these representations relate to previously established spinor representations as they arise in the theory of supergravity.

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