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arXiv 2202.04017hep-th
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与费米子耦合的QCD $_2$的超对称性

Supersymmetry in QCD$_2$ coupled to fermions

Fedor K. Popov

摘要:

考虑$1+1$维杨-米尔斯理论,其中规范群$G$与有质量的Majorana费米子场在伴随表象中耦合,若干无质量的Dirac或Majorana费米子变换为规范群$G$的任意表象.结果表明,在伴随费米子的特定质量下,该理论的大质量扇形谱变得超对称。这个质量与模型无质量扇区的详细结构无关,只取决于测量总异常的规范群$G$和整数$k$。模型的无质量部分不一定是超对称的。

英文摘要:

We consider $1+1$ dimensional Yang-Mills theory with gauge group $G$ coupled to a massive Majorana fermion field in an adjoint representation and a number of massless Dirac or Majorana fermions transforming in arbitrary representations of the gauge group $G$. It is shown that the spectrum of the massive sector of this theory becomes supersymmetric at particular mass of adjoint fermion. This mass is independent of the detailed structure of the massless sector of the model and depends only on the gauge group $G$ and integer $k$ measuring the total anomaly. The massless sector of the model is shown to be not necessarily supersymmetric.

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