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arXiv 2110.07623hep-th
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电磁背景下超弦的高自旋态

Higher-Spin States of the Superstring in an Electromagnetic Background

Karim Benakli, Nathan Berkovits, Cassiano A. Daniel, Matheus Lize

摘要:

构造电磁背景中高自旋带电场的四维拉格朗日量是一个开放的问题。1989年,Argyres和Nappi利用玻色开弦场论,在恒定电磁背景下,构造了一个带电的大质量自旋2场的拉格朗日量。本文利用四维开超弦场论的混合形式,构造了在恒定电磁背景下,自旋为2和自旋为3/2的带电质量场的超对称拉格朗日量。与RNS形式相比,混合形式具有明显的$\mathcal{N}=1$ d=4时空超对称性的优点,因此自旋2和自旋3/2场被组合成一个单一的超场,并且不需要图像改变或自旋场。

英文摘要:

Constructing a consistent four-dimensional Lagrangian for charged massive higher-spin fields propagating in an electromagnetic background is an open problem. In 1989, Argyres and Nappi used bosonic open string field theory to construct a Lagrangian for charged massive spin-2 fields in a constant electromagnetic background. In this paper, we use the four-dimensional hybrid formalism for open superstring field theory to construct a supersymmetric Lagrangian for charged massive spin-2 and spin-3/2 fields in a constant electromagnetic background. The hybrid formalism has the advantage over the RNS formalism of manifest $\mathcal{N}=1$ d=4 spacetime supersymmetry so that the spin-2 and spin-3/2 fields are combined into a single superfield and there is no need for picture-changing or spin fields.

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