Universal sectors of two-dimensional Carrollian CFTs
A bstract We revisit modular invariance in two-dimensional Carrollian conformal field theories from a geometric perspective. Focusing on the characters of the induced and highest-weight representations of the theory, we show that there are regions of parameter space where the vacuum character dominates in the dual channel. We use this property to zoom into different subsectors of the Carrollian theory. One of them is reminiscent of the Schwarzian sector of a relativistic CFT 2 and has a flat space holographic interpretation as O -plane orbifold. It exists only for the highest-weight representation. We prove that for all sectors with vacuum dominance in the dual channel, the specific heat is negative, concurrent with the holographic interpretation of the negative specific heat of asymptotically flat spacetimes with horizons.
Authors
- Arjun Bagchi (ORCID: https://orcid.org/0000-0002-6481-5933)
- Joan Simón (ORCID: https://orcid.org/0000-0002-7672-9389)
- Daniel Grumiller (ORCID: https://orcid.org/0000-0001-7980-5394)
- Max Riegler (ORCID: https://orcid.org/0000-0002-0131-957X)
- Stéphane Detournay (ORCID: https://orcid.org/0000-0001-7529-7978)
- Ankit Aggarwal (ORCID: https://orcid.org/0000-0003-2093-2377)
Institutions
- Université Libre de Bruxelles (BE)
- Okinawa Institute of Science and Technology Graduate University (JP)
- TU Wien (AT)
- Quantum Technology Sciences (United States) (US)
- Maxwell Institute for Mathematical Sciences (GB)
- International Solvay Institutes (BE)
- Schrodinger (United States) (US)
- Indian Institute of Technology Kanpur (IN)
- University of Edinburgh (GB)
Publication Details
- Journal
- Journal of High Energy Physics
- Published
- 2025-11-10
- DOI
- https://doi.org/10.1007/jhep11(2025)039
- Primary Topic
- Black Holes and Theoretical Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Arthritis National Research Foundation
- Durham University
- Department of Science and Technology, Ministry of Science and Technology, India
- Austrian Science Fund
- Fonds De La Recherche Scientifique - FNRS
- Cardiac Children's Foundation Taiwan
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Okinawa Institute of Science and Technology Graduate University
- Technische Universität Wien
- Science and Engineering Research Board