标题： W对称性，异常和具有非紧致全纯的杂化背景 显示英文标题

标题： W-symmetries, anomalies and heterotic backgrounds with non-compact holonomy

摘要： 我们确定了在具有非紧致全纯群的超对称异质背景上传播的sigma模型的全纯对称代数。 我们证明这些对称代数作为W代数闭合，而该W代数由生成全纯对称的协变常形式空间上的李代数结构所指定。 此外，我们识别了与这些对称相关的左手异常。 我们认为这些异常是一致的，并且在sigma模型微扰理论中可以至多两环被抵消。 显示英文摘要

摘要： We determine the algebra of holonomy symmetries of sigma models propagating on supersymmetric heterotic backgrounds with a non-compact holonomy group. We demonstrate that these close as a W-algebra, which in turn is specified by a Lie algebra structure on the space of covariantly constant forms that generate the holonomy symmetries. In addition, we identify the chiral anomalies associated with these symmetries. We argue that these anomalies are consistent and can be cancelled up to two loops in the sigma model perturbation theory.