arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1804.02018hep-thcond-mat.str-el
收藏

三维${\cal N}=1$ SCFT的奇特之处

Curious Aspects of Three-Dimensional ${\cal N}=1$ SCFTs

Davide Gaiotto, Zohar Komargodski, Jingxiang Wu

摘要:

我们研究了某些三维${\cal N}=1$时间反演不变理论的动力学。这样的理论经常有超对称真空的精确模空间。我们提出了几个对偶,我们测试这些建议通过比较变形和超对称基态。首先,我们考虑一个理论,其中时间反演对称性只出现在红外线和存在(尽管如此)一个确切的模空间的真空。该理论具有明显的时间反演对称性的双重描述。第二,我们考虑一些令人惊讶的事实,${\cal N}=2$ $U(1)$规范理论耦合到两个手征超场的电荷1。这个理论声称在红外线中有突现的$SU(3)$全局对称性。我们提出了一个对偶Wess-Zumino描述(即标量和费米子,但没有规范场的理论),具有明显的$SU(3)$对称性,但只有${\cal N}=1$超对称性。我们认为,这种Wess-Zumino模型必须在红外增强超对称性。最后,我们对${\cal N}=1$ $SU(N)$规范理论与$N_f$夸克的时反不变量耦合动力学作了简要的评述。我们认为,对于$N_f<N$,在微扰论中存在一个真空模空间,但它是非微扰提升的。

英文摘要:

We study the dynamics of certain 3d ${\cal N}=1$ time reversal invariant theories. Such theories often have exact moduli spaces of supersymmetric vacua. We propose several dualities and we test these proposals by comparing the deformations and supersymmetric ground states. First, we consider a theory where time reversal symmetry is only emergent in the infrared and there exists (nonetheless) an exact moduli space of vacua. This theory has a dual description with manifest time reversal symmetry. Second, we consider some surprising facts about ${\cal N}=2$ $U(1)$ gauge theory coupled to two chiral superfields of charge 1. This theory is claimed to have emergent $SU(3)$ global symmetry in the infrared. We propose a dual Wess-Zumino description (i.e. a theory of scalars and fermions but no gauge fields) with manifest $SU(3)$ symmetry but only ${\cal N}=1$ supersymmetry. We argue that this Wess-Zumino model must have enhanced supersymmetry in the infrared. Finally, we make some brief comments about the dynamics of ${\cal N}=1$ $SU(N)$ gauge theory coupled to $N_f$ quarks in a time reversal invariant fashion. We argue that for $N_f<N$ there is a moduli space of vacua to all orders in perturbation theory but it is non-perturbatively lifted.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑