Extracting Edge Modes: Reduction of 3D and 2D Gravities
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866912784417030144 |
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| author | Joung, Euihun Kim, Sejin |
| author_facet | Joung, Euihun Kim, Sejin |
| contents | We investigate the boundary reduction of 3D Einstein gravity and JT gravity into their respective edge mode theories - namely, the Liouville and Alekseev-Shatashvili, and Schwarzian models. By examining the roles of boundary conditions, canonical transformations, and differing formulations - metric versus Chern-Simons - we clarify how physical degrees of freedom become localized at the boundary and resolve several long-standing ambiguities in the reduction procedure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_09239 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Extracting Edge Modes: Reduction of 3D and 2D Gravities Joung, Euihun Kim, Sejin High Energy Physics - Theory We investigate the boundary reduction of 3D Einstein gravity and JT gravity into their respective edge mode theories - namely, the Liouville and Alekseev-Shatashvili, and Schwarzian models. By examining the roles of boundary conditions, canonical transformations, and differing formulations - metric versus Chern-Simons - we clarify how physical degrees of freedom become localized at the boundary and resolve several long-standing ambiguities in the reduction procedure. |
| title | Extracting Edge Modes: Reduction of 3D and 2D Gravities |
| topic | High Energy Physics - Theory |
| url | https://arxiv.org/abs/2509.09239 |