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- Title
Symmetry fractionalized (irrationalized) fusion rules and two domain-wall Verlinde formulae.
- Authors
Zhao, Yu; Wang, Hongyu; Hu, Yuting; Wan, Yidun
- Abstract
We investigate the composite systems consisting of topological orders separated by gapped domain walls. We derive a pair of domain-wall Verlinde formulae, that elucidate the connection between the braiding of interdomain excitations labeled by pairs of anyons in different domains and quasiparticles in the gapped domain wall with their respective fusion rules. Through explicit non-Abelian examples, we showcase the calculation of such braiding and fusion, revealing that the fusion rules for interdomain excitations are generally fractional or irrational. By investigating the correspondence between composite systems and anyon condensation, we unveil the reason for designating these fusion rules as symmetry fractionalized (irrationalized) fusion rules. Our findings hold promise for applications across various fields, such as topological quantum computation, topological field theory, conformal field theory, and parton physics.
- Subjects
TOPOLOGICAL fields; QUANTUM computing; ANYONS; SYMMETRY; QUASIPARTICLES; CELL fusion
- Publication
Journal of High Energy Physics, 2024, Vol 2024, Issue 4, p1
- ISSN
1126-6708
- Publication type
Article
- DOI
10.1007/JHEP04(2024)115