论文标题
真空空间的全球方面
Global Aspects of Spaces of Vacua
论文作者
论文摘要
我们研究“真空交叉”，这是在理论的真空交换时发生的，因为我们在闭环中改变了某些周期性参数$θ$。我们表明，真空交叉是研究强耦合量子场理论的有用的非扰动工具，因为在该理论的弱耦合方面发现真空交叉可能会导致在强耦合方案中的非平凡后果。我们首先讨论一种机制，在该机制中，由于异常发生真空交叉，然后讨论真空交叉的某些应用。特别是，我们认为真空交叉可用于检查IR二重性并寻找新兴的IR对称性。
We study "vacuum crossing", which occurs when the vacua of a theory are exchanged as we vary some periodic parameter $θ$ in a closed loop. We show that vacuum crossing is a useful non-perturbative tool to study strongly-coupled quantum field theories, since finding vacuum crossing in a weakly-coupled regime of the theory can lead to nontrivial consequences in the strongly-coupled regime. We start by discussing a mechanism where vacuum crossing occurs due to an anomaly, and then discuss some applications of vacuum crossing in general. In particular, we argue that vacuum crossing can be used to check IR dualities and to look for emergent IR symmetries.
