Unitary highest weight modules of locally affine Lie algebras
Unitary highest weight modules of locally affine Lie algebras
复制标题
局部仿射李代数的酉最高权模
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
K. Neeb
中科院分区:
文献类型:
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作者:
K. Neeb
Locally affine Lie algebras are generalizations of affine Kac-M oody 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.