Holographic BCFT with a Defect on the End-of-the-World brane
Abstract In this paper, we propose a new gravity dual for a 2d BCFT with two conformal boundaries by introducing a defect that connects the two End-of-the-World branes. We demonstrate that the BCFT dual to this bulk model exhibits a richer lowest spectrum. The corresponding lowest energy eigenvalue...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-11-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP11(2022)123 |
| _version_ | 1797865682233196544 |
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| author | Masamichi Miyaji Chitraang Murdia |
| author_facet | Masamichi Miyaji Chitraang Murdia |
| author_sort | Masamichi Miyaji |
| collection | DOAJ |
| description | Abstract In this paper, we propose a new gravity dual for a 2d BCFT with two conformal boundaries by introducing a defect that connects the two End-of-the-World branes. We demonstrate that the BCFT dual to this bulk model exhibits a richer lowest spectrum. The corresponding lowest energy eigenvalue can continuously interpolate between − πc 24 Δ x $$ -\frac{\pi c}{24\Delta x} $$ and 0 where ∆x is the distance between the boundaries. This range was inaccessible to the conventional AdS/BCFT model with distinct boundary conditions. We compute the holographic entanglement entropy and find that it exhibits three different phases, one of which breaks the time reflection symmetry. We also construct a wormhole saddle, analogous to a 3d replica wormhole, which connects different boundaries through the AdS bulk. This saddle is present only if the BCFT is non-unitary and is always subdominant compared to the disconnected saddle. |
| first_indexed | 2024-04-09T23:13:13Z |
| format | Article |
| id | doaj.art-8a6b6aa0a57e4ce7b03790bd5d759ea1 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-09T23:13:13Z |
| publishDate | 2022-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-8a6b6aa0a57e4ce7b03790bd5d759ea12023-03-22T10:16:22ZengSpringerOpenJournal of High Energy Physics1029-84792022-11-0120221112710.1007/JHEP11(2022)123Holographic BCFT with a Defect on the End-of-the-World braneMasamichi Miyaji0Chitraang Murdia1Institute for Advanced Research, Nagoya UniversityBerkeley Center for Theoretical Physics, Department of Physics, University of CaliforniaAbstract In this paper, we propose a new gravity dual for a 2d BCFT with two conformal boundaries by introducing a defect that connects the two End-of-the-World branes. We demonstrate that the BCFT dual to this bulk model exhibits a richer lowest spectrum. The corresponding lowest energy eigenvalue can continuously interpolate between − πc 24 Δ x $$ -\frac{\pi c}{24\Delta x} $$ and 0 where ∆x is the distance between the boundaries. This range was inaccessible to the conventional AdS/BCFT model with distinct boundary conditions. We compute the holographic entanglement entropy and find that it exhibits three different phases, one of which breaks the time reflection symmetry. We also construct a wormhole saddle, analogous to a 3d replica wormhole, which connects different boundaries through the AdS bulk. This saddle is present only if the BCFT is non-unitary and is always subdominant compared to the disconnected saddle.https://doi.org/10.1007/JHEP11(2022)123AdS-CFT CorrespondenceBoundary Quantum Field Theory |
| spellingShingle | Masamichi Miyaji Chitraang Murdia Holographic BCFT with a Defect on the End-of-the-World brane Journal of High Energy Physics AdS-CFT Correspondence Boundary Quantum Field Theory |
| title | Holographic BCFT with a Defect on the End-of-the-World brane |
| title_full | Holographic BCFT with a Defect on the End-of-the-World brane |
| title_fullStr | Holographic BCFT with a Defect on the End-of-the-World brane |
| title_full_unstemmed | Holographic BCFT with a Defect on the End-of-the-World brane |
| title_short | Holographic BCFT with a Defect on the End-of-the-World brane |
| title_sort | holographic bcft with a defect on the end of the world brane |
| topic | AdS-CFT Correspondence Boundary Quantum Field Theory |
| url | https://doi.org/10.1007/JHEP11(2022)123 |
| work_keys_str_mv | AT masamichimiyaji holographicbcftwithadefectontheendoftheworldbrane AT chitraangmurdia holographicbcftwithadefectontheendoftheworldbrane |