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arXiv 0902.4674hep-thmath.RAmath.RT
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酉Bagger-Lambert理论的度量3-李代数

Metric 3-Lie algebras for unitary Bagger-Lambert theories

Paul de Medeiros, José Figueroa-O'Farrill, Elena Méndez-Escobar, Patricia Ritter

摘要:

证明了允许极大迷向中心的有限维不定签名度量3-李代数的一个结构定理。这个代数条件表明,在相关的Bagger-Lambert理论中,所有的负范数态都可以一致地从物理希尔伯特空间解耦。作为定理的直接应用,构造了指数2以上的新例子。得到了基于这类一般物理容许3-李代数的Bagger-Lambert理论的拉格朗日量。在适当的真空周围展开后,我们发现了这些理论与某些更传统的最大超对称规范理论之间的精确关系,这些理论通常涉及N=8的超杨-米尔斯和大质量矢量超多重态的特定组合。由此将提供一个3-李代数数据和所得到的规范理论中的物理参数之间的字典。

英文摘要:

We prove a structure theorem for finite-dimensional indefinite-signature metric 3-Lie algebras admitting a maximally isotropic centre. This algebraic condition indicates that all the negative-norm states in the associated Bagger-Lambert theory can be consistently decoupled from the physical Hilbert space. As an immediate application of the theorem, new examples beyond index 2 are constructed. The lagrangian for the Bagger-Lambert theory based on a general physically admissible 3-Lie algebra of this kind is obtained. Following an expansion around a suitable vacuum, the precise relationship between such theories and certain more conventional maximally supersymmetric gauge theories is found. These typically involve particular combinations of N=8 super Yang-Mills and massive vector supermultiplets. A dictionary between the 3-Lie algebraic data and the physical parameters in the resulting gauge theories will thereby be provided.

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