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Orbifold data as gaugeable non-invertible symmetries

组织者

白岸斯 , 陈群皓 , 孔良 , 王亦龙 , 张智浩 , 郑浩

演讲者

Nils Carqueville

时间

2025年03月25日 16:00 至 18:00

地点

A3-1-301

线上

Zoom 468 248 1222 (BIMSA)

摘要

Orbifold data are defects in topological quantum field theories which can be gauged to obtain a new TQFT. Examples include gaugings of (higher) group actions, state sum models, and more generally gaugings of "non-invertible symmetries". The defining conditions of orbifold data encode invariance under the choice of defect network used in the gauging process, which has been rigorously developed in arbitrary dimensions. The talk gives an introduction to the orbifold construction and illustrates it with examples in dimensions 2,3, and 4.