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arXiv 1708.06262hep-thmath-phmath.MP
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高自旋超场与手征超多重态的相互作用:守恒超流和立方顶点

Higher Spin Superfield interactions with the Chiral Supermultiplet: Conserved Supercurrents and Cubic Vertices

I. L. Buchbinder, S. James Gates, Konstantinos Koutrolikos

摘要:

本文研究了$4D,\, \mathcal{N}=1$超庞加莱代数不可约表示的手征超场与高自旋超场之间的立方相互作用。我们这样做的要求下,最一般的变换,线性手征超场的不变性。根据Noether的方法,我们构造了一个无限大的高自旋超流多重态的塔,这些多重态在手征超场中是二次的,并且包含高阶导数。结果表明,单个无质量手征超场只能耦合到半整数自旋超多重态$(s+1,s+1/2)$,并且对于每个自旋值都存在一个适当的改进项,使超流多重态减少到与超共形高自旋相匹配的最小多重态.另一方面,一个单一的,大量的,手征超场只能耦合到更高的自旋类型$(2l+2\hspace{0.3ex},\hspace{0.1ex}2l+3/2)$的超多重态,没有最小的多重态。此外,对于无质量的情况下,我们讨论了组件级别的较高的自旋电流,并提供了明确的表达式的整数和半整数自旋守恒电流连同R-对称电流。

英文摘要:

We investigate cubic interactions between a chiral superfield and higher spin superfield corresponding to irreducible representations of the $4D,\, \mathcal{N}=1$ super-Poincaré algebra. We do this by demanding an invariance under the most general transformation, linear in the chiral superfield. Following Noether's method we construct an infinite tower of higher spin supercurrent multiplets which are quadratic in the chiral superfield and include higher derivatives. The results are that a single, massless, chiral superfield can couple only to the half-integer spin supermultiplets $(s+1,s+1/2)$ and for every value of spin there is an appropriate improvement term that reduces the supercurrent multiplet to a minimal multiplet which matches that of superconformal higher spins. On the other hand a single, massive, chiral superfield can couple only to higher spin supermultiplets of type $(2l+2\hspace{0.3ex},\hspace{0.1ex}2l+3/2)$ and there is no minimal multiplet. Furthermore, for the massless case we discuss the component level higher spin currents and provide explicit expressions for the integer and half-integer spin conserved currents together with a R-symmetry current.

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