Using topological operations to explore phase transitions beyond Landau
ORAL
Abstract
Simple operations such as gauging a discrete symmetry or stacking with an invertibe phase can be utilized to map familiar CFTs governing familiar phase transitions to less familiar scenario. I will discuss work that does this for both bosonic and fermionic theories in two spacetime dimensions. Starting from the Ising CFT, we obtain webs of CFTs that govern transitions involving nontrivial invertible phases of matter. Our work gives an explicit Lagrangian description of these CFTs and exhibits symmetry enriched quantum criticality in its natural habitat.
*This project was supported by the US Department of Energy under Grant DE-SC0022021 and by a grant from the Simons Foundation as part of the collaboration on Ultra Quantum Matter (Grant 651678, AK)
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Publication: JHEP 06 (2025) 028
JHEP 10 (2025) 069
Presenters
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Ryan Spieler
- University of Texas at Austin