标题： 解开自发破缺的阿贝尔陈-西蒙斯理论 显示英文标题

标题： Unraveling spontaneously broken abelian Chern-Simons theories

摘要： 在本次演讲中，我描述了最近的工作（hep-th/9606029），其中我对所有可能的2+1维Chern-Simons（CS）理论进行了分类，这些理论具有连续紧致阿贝尔规范群或有限阿贝尔规范群。 从具有各种紧致U(1)规范群的直积作为规范群的CS理论的自发破缺中可以得到的具有有限阿贝尔规范群的CS理论也被识别出来。 那些无法以这种方式达到的理论实际上是最有趣的，因为它们会导致非阿贝尔现象，例如非阿贝尔辫子统计、爱丽丝通量和查希尔电荷，并且一般情况下会导致与具有非阿贝尔有限规范群的2+1维理论的对偶性。 显示英文摘要

摘要： In this talk I describe recent work (hep-th/9606029) in which I classified all conceivable 2+1 dimensional Chern-Simons (CS) theories with continuous compact abelian gauge group or finite abelian gauge group. The CS theories with finite abelian gauge group that can be obtained from the spontaneous breakdown of a CS theory with gauge group the direct product of various compact U(1) gauge groups were also identified. Those that can not be reached in this way are actually the most interesting since they lead to nonabelian phenomena such as nonabelian braid statistics, Alice fluxes and Cheshire charges and quite generally lead to dualities with 2+1 dimensional theories with a nonabelian finite gauge group.