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arXiv 0705.3064hep-th
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N=8力学模型的层次

Hierarchy of N=8 Mechanics Models

Evgeny Ivanov, Olaf Lechtenfeld, Anton Sutulin

摘要:

利用一维(时间)N=4的超空间方法,我们构造了hep-th/0406015中分类的多重态(b,8,8-b)的一般N=8的超对称力学作用量,主要关注以前未探索的情况(8,8,0),(7,8,1)和(6,8,2),以及(5,8,3)的完整性. N=8的超对称性的行动相当于一个调和条件的拉格朗日关于其超场的论点。我们推导出通用的“根”多重态(8,8,0)的离壳分量动作,证明了所有其他多重态的动作都是通过自守对偶的,并认为这种层次结构是普遍的。玻色子靶几何在所有情况下都是共形平坦的,具有唯一的标量势(除了根多重态)。我们表明,N=4的超场约束尊重全R-对称性,并找到其商的明确实现超过了明显的R-对称性的超场和分量场。新发现了几个N=8超对称的R对称N=4超场拉格朗日量,或用一种简单的普适方法再现了这些超场拉格朗日量。

英文摘要:

Using the N=4 superspace approach in one dimension (time), we construct general N=8 supersymmetric mechanics actions for the multiplets (b,8,8-b) classified in hep-th/0406015, with the main focus on the previously unexplored cases of (8,8,0), (7,8,1) and (6,8,2), as well as on (5,8,3) for completeness. N=8 supersymmetry of the action amounts to a harmonicity condition for the Lagrangian with respect to its superfield arguments. We derive the generic off-shell component action for the ``root'' multiplet (8,8,0), prove that the actions for all other multiplets follow from it through automorphic dualities and argue that this hierarchical structure is universal. The bosonic target geometry in all cases is conformally flat, with a unique scalar potential (except for the root multiplet). We show that the N=4 superfield constraints respect the full R-symmetry and find the explicit realization of its quotient over the manifest R-symmetry on superfields and component fields. Several R-symmetric N=4 superfield Lagrangians with N=8 supersymmetry are either newly found or reproduced by a simple universal method.

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