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Journal Article

Kramers-Wannier duality from conformal defects

MPS-Authors

Fröhlich,  Jürg
Quantum Gravity & Unified Theories, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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0404051.pdf
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Citation

Fröhlich, J., Fuchs, J., Runkel, I., & Schweigert, C. (2004). Kramers-Wannier duality from conformal defects. Physical Review Letters, 93: 070601.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0013-51CE-9
Abstract
We demonstrate that the fusion algebra of conformal defects of a two-dimensional conformal field theory contains information about the internal symmetries of the theory and allows one to read off generalisations of Kramers-Wannier duality. We illustrate the general mechanism in the examples of the Ising model and the three-states Potts model.