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arXiv 1003.0555hep-th
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矢量超对称的场表示

Field Representations of Vector Supersymmetry

Roberto Casalbuoni, Federico Elmetti, Simon Knapen, Laura Tamassia

摘要:

研究了具有非零中心荷的超自旋Y=0和Y=1/2的矢量超对称性的场表示。对于Y=0,我们提出了两个多重态组成的四个旋量场,两个偶数和两个奇数,我们提供了一个自由的行动。这两种多重态之间的主要区别在于中心荷算符的作用方式以及与旋量上的Majorana实性条件的兼容性。其中之一与先前研究的自旋粒子模型有关。当Y=1/2时,我们给出了一个由一个偶标量、一个奇向量和一个偶自对偶二形式组成的多重态,它是欧氏时空中张量超对称代数的一个已知表示的截断.我们讨论了它对闵可夫斯基时空的旋转,并提供了一组动力学方程,但这些方程不是从拉格朗日方程推导出来的。我们发展了一个具有中心荷的矢量超对称的超空间形式,并利用超空间技术导出了多重态。最后讨论了中心荷为零的表示。

英文摘要:

We study some field representations of vector supersymmetry with superspin Y=0 and Y=1/2 and nonvanishing central charges. For Y=0, we present two multiplets composed of four spinor fields, two even and two odd, and we provide a free action for them. The main differences between these two multiplets are the way the central charge operators act and the compatibility with the Majorana reality condition on the spinors. One of the two is related to a previously studied spinning particle model. For Y=1/2, we present a multiplet composed of one even scalar, one odd vector and one even selfdual two-form, which is a truncation of a known representation of the tensor supersymmetry algebra in Euclidean spacetime. We discuss its rotation to Minkowski spacetime and provide a set of dynamical equations for it, which are however not derived from a Lagrangian. We develop a superspace formalism for vector supersymmetry with central charges and we derive our multiplets by superspace techniques. Finally, we discuss some representations with vanishing central charges.

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