From orbifolding conformal field theories to gauging topological phases

Xiao Chen, Abhishek Roy, Jeffrey C.Y. Teo, Shinsei Ryu

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Topological phases of matter in (2+1) dimensions are commonly equipped with global symmetries, such as electric-magnetic duality in gauge theories and bilayer symmetry in fractional quantum Hall states. Gauging these symmetries into local dynamical ones is one way of obtaining exotic phases from conventional systems. We study this using the bulk-boundary correspondence and applying the orbifold construction to the (1+1)-dimensional edge described by a conformal field theory (CFT). Our procedure puts twisted boundary conditions into the partition function and predicts the fusion, spin, and braiding behavior of anyonic excitations after gauging. We demonstrate this for the electric-magnetic self-dual ZN gauge theory, the twofold symmetric SU(3)1, and the S3-symmetric SO(8)1 Wess-Zumino-Witten theories.

Original languageEnglish (US)
Article number115447
JournalPhysical Review B
Issue number11
StatePublished - Sep 27 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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