Beijing Institute of Mathematical Sciences and Applications Beijing Institute of Mathematical Sciences and Applications

  • About
    • President
    • Governance
    • Partner Institutions
    • Visit
  • People
    • Management
    • Faculty
    • Postdocs
    • Visiting Scholars
    • Staff
  • Research
    • Research Groups
    • Courses
    • Seminars
  • Join Us
    • Faculty
    • Postdocs
    • Students
  • Events
    • Conferences
    • Workshops
    • Forum
  • Life @ BIMSA
    • Accommodation
    • Transportation
    • Facilities
    • Tour
  • News
    • News
    • Announcement
    • Downloads
About
President
Governance
Partner Institutions
Visit
People
Management
Faculty
Postdocs
Visiting Scholars
Staff
Research
Research Groups
Courses
Seminars
Join Us
Faculty
Postdocs
Students
Events
Conferences
Workshops
Forum
Life @ BIMSA
Accommodation
Transportation
Facilities
Tour
News
News
Announcement
Downloads
Qiuzhen College, Tsinghua University
Yau Mathematical Sciences Center, Tsinghua University (YMSC)
Tsinghua Sanya International  Mathematics Forum (TSIMF)
Shanghai Institute for Mathematics and  Interdisciplinary Sciences (SIMIS)
BIMSA > Category and Topological Order Seminar Theta Defects
Theta Defects
Organizer
Hao Zheng
Speaker
Lakshya Bhardwaj
Time
Tuesday, March 7, 2023 7:00 PM - 9:00 PM
Venue
Online
Abstract
I will describe construction of theta defects, which are topological defects in possibly non-topological systems. Such defects arise as a consequence of a discrete gauging or condensation of a global symmetry S, and are in one-to-one correspondence with lower-dimensional topological systems protected by the symmetry S. Theta defects are universal in the sense that they exist in any system that can be obtained by gauging/condensing symmetry S of some other system. We will see that theta defects form fusion higher-categories, with prominent examples being higher-representations of groups and higher-groups. In a following talk, Apoorv Tiwari would describe a non-universal generalization known as twisted theta defects. Based on ArXiv: 2204.06564, 2208.05973, 2212.06159 and 2212.06842.
Beijing Institute of Mathematical Sciences and Applications
CONTACT

No. 544, Hefangkou Village Huaibei Town, Huairou District Beijing 101408

北京市怀柔区 河防口村544号
北京雁栖湖应用数学研究院 101408

Tel. 010-60661855
Email. administration@bimsa.cn

Copyright © Beijing Institute of Mathematical Sciences and Applications

京ICP备2022029550号-1

京公网安备11011602001060 京公网安备11011602001060