Hellerman, Simeon; Orlando, Domenico; Pellizzani, Vito; Reffert, Susanne; Swanson, Ian (2022). Nonrelativistic CFTs at large charge: Casimir energy and logarithmic enhancements. Journal of High Energy Physics, 2022(5) Springer 10.1007/JHEP05(2022)135
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In this note we study two-dimensional conformal field theories at large global charge. Since the largecharge sector decouples from the dynamics, it does not control the dynamics and an effective field theory construction that works in higher-dimensional theories fails. It is however possible to use large charge in a double-scaling limit when another controlling parameter is present. We find some general features of the spectrum of models that admit a nonlinear sigma model description in a Wentzel-Kramers-Brillouin approximation and use the large-charge sector of the solvable SUð2Þk Wess-Zumino-Witten model to argue the regimes of applicability of both the large-Q expansion and the double-scaling limit.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Institute of Theoretical Physics 10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) |
UniBE Contributor: |
Orlando, Domenico, Pellizzani, Vito, Reffert, Susanne |
Subjects: |
500 Science > 530 Physics |
ISSN: |
1029-8479 |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Binia Marti |
Date Deposited: |
17 Mar 2023 15:12 |
Last Modified: |
17 Mar 2023 23:27 |
Publisher DOI: |
10.1007/JHEP05(2022)135 |
BORIS DOI: |
10.48350/180235 |
URI: |
https://boris.unibe.ch/id/eprint/180235 |
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