Universal sectors of two-dimensional Carrollian CFTs
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arXiv
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| Main Authors: | , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866909899008507904 |
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| author | Aggarwal, Ankit Bagchi, Arjun Detournay, Stephane Grumiller, Daniel Riegler, Max Simon, Joan |
| author_facet | Aggarwal, Ankit Bagchi, Arjun Detournay, Stephane Grumiller, Daniel Riegler, Max Simon, Joan |
| contents | 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 CFT2 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2508_05735 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Universal sectors of two-dimensional Carrollian CFTs Aggarwal, Ankit Bagchi, Arjun Detournay, Stephane Grumiller, Daniel Riegler, Max Simon, Joan High Energy Physics - Theory 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 CFT2 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. |
| title | Universal sectors of two-dimensional Carrollian CFTs |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2508.05735 |