Recently synthetic gauge fields have been implemented on quantum simulators. Unlike the gauge fields in the real world, in synthetic gauge fields, the gauge charge can fluctuate and gauge invariance can be violated, which leading rich physics unexplored before. In this talk, I will introduce the gauge violation spectroscopy as a useful experimentally accessible measurement in the synthetic gauge theories. Using three models as examples, two of them can be exactly solved by bosonization, and one has been realized in experiment, I will demonstrate the gauge violation spectroscopy can be used to detect the confinement and deconfinement phases. In the confinement phase, it shows a delta function behavior, while in the deconfinement phase, it has a finite width.

报告人简介

郑炜，中国科学技术大学物理学院特任教授。2012年于中山大学获得博士学位。2012年至2019年先后在清华大学、剑桥大学、以及香港大学从事博士后研究工作。2020年加入中国科学技术大学至今。2021年获得基金委海外优青项目支持。主要研究方向为基于超冷原子平台的量子多体理论。在Nature Physics、Physical Review Letters、Science Bulletin等学术期刊上发表论文30余篇。

邀请人

石弢 研究员