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arXiv 2108.01865hep-th
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三维N=1超共形理论中超自旋2电流多重态的三点函数

Three-point functions of a superspin-2 current multiplet in 3D, N=1 superconformal theory

Evgeny I. Buchbinder, Benjamin J. Stone

摘要:

我们认为$\mathcal{N=1}$超共形场论在三维拥有一个保守的电流多重态$\mathcal{F}_{ (α_{1} α_{2} α_{3} α_{4}) }$,我们称之为superspin-2电流多重态。在组分水平上,它包含一个不同于能量动量张量的守恒自旋2流和一个自旋为5/2的守恒费米子高自旋流。使用超空间公式,我们计算关联函数涉及$\mathcal{F}$,特别是集中在三点函数$ \langle \mathcal{F} \mathcal{F} \mathcal{F} \rangle $。在施加了由守恒方程和超空间点置换下的不变性所产生的约束后,我们发现这个三点函数的奇偶偶和奇偶奇扇区每个都固定到一个系数。奇宇称贡献的存在是相当不平凡的,因为在超对称性和奇宇称结构的存在之间存在着明显的张力。

英文摘要:

We consider $\mathcal{N=1}$ superconformal field theories in three-dimensions possessing a conserved current multiplet $\mathcal{F}_{ (α_{1} α_{2} α_{3} α_{4}) }$ which we refer to as the superspin-2 current multiplet. At the component level it contains a conserved spin-2 current different from the energy-momentum tensor and a conserved fermionic higher spin current of spin 5/2. Using a superspace formulation, we calculate correlation functions involving $\mathcal{F}$, focusing particularly on the three-point function $ \langle \mathcal{F} \mathcal{F} \mathcal{F} \rangle $. After imposing the constraints arising from conservation equations and invariance under permutation of superspace points, we find that the parity-even and parity-odd sectors of this three-point function are each fixed up to a single coefficient. The presence of the parity-odd contribution is rather non-trivial, as there is an apparent tension between supersymmetry and the existence of parity-odd structures.

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