Islands in asymptotically flat 2D gravity
Abstract The large-N limit of asymptotically flat two-dimensional dilaton gravity coupled to N free matter fields provides a useful toy model for semiclassical black holes and the information paradox. Analyses of the asymptotic information flux as given by the entanglement entropy show that it follo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-07-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP07(2020)022 |
| _version_ | 1819170893415317504 |
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| author | Thomas Hartman Edgar Shaghoulian Andrew Strominger |
| author_facet | Thomas Hartman Edgar Shaghoulian Andrew Strominger |
| author_sort | Thomas Hartman |
| collection | DOAJ |
| description | Abstract The large-N limit of asymptotically flat two-dimensional dilaton gravity coupled to N free matter fields provides a useful toy model for semiclassical black holes and the information paradox. Analyses of the asymptotic information flux as given by the entanglement entropy show that it follows the Hawking curve, indicating that information is destroyed in these models. Recently, motivated by developments in AdS/CFT, a semiclassical island rule for entropy has been proposed. We define and compute the island rule entropy for black hole formation and evaporation in the large-N RST model of dilaton gravity and show that, in contrast, it follows the unitary Page curve. The relation of these two observations, and interesting properties of the dilaton gravity island rule, are discussed. |
| first_indexed | 2024-12-22T19:42:38Z |
| format | Article |
| id | doaj.art-6965f037190a41e8841da637a1234fd9 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-22T19:42:38Z |
| publishDate | 2020-07-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-6965f037190a41e8841da637a1234fd92022-12-21T18:14:48ZengSpringerOpenJournal of High Energy Physics1029-84792020-07-012020712910.1007/JHEP07(2020)022Islands in asymptotically flat 2D gravityThomas Hartman0Edgar Shaghoulian1Andrew Strominger2Department of Physics, Cornell UniversityDepartment of Physics, Cornell UniversityDepartment of Physics, Harvard UniversityAbstract The large-N limit of asymptotically flat two-dimensional dilaton gravity coupled to N free matter fields provides a useful toy model for semiclassical black holes and the information paradox. Analyses of the asymptotic information flux as given by the entanglement entropy show that it follows the Hawking curve, indicating that information is destroyed in these models. Recently, motivated by developments in AdS/CFT, a semiclassical island rule for entropy has been proposed. We define and compute the island rule entropy for black hole formation and evaporation in the large-N RST model of dilaton gravity and show that, in contrast, it follows the unitary Page curve. The relation of these two observations, and interesting properties of the dilaton gravity island rule, are discussed.http://link.springer.com/article/10.1007/JHEP07(2020)0222D GravityBlack HolesModels of Quantum Gravity |
| spellingShingle | Thomas Hartman Edgar Shaghoulian Andrew Strominger Islands in asymptotically flat 2D gravity Journal of High Energy Physics 2D Gravity Black Holes Models of Quantum Gravity |
| title | Islands in asymptotically flat 2D gravity |
| title_full | Islands in asymptotically flat 2D gravity |
| title_fullStr | Islands in asymptotically flat 2D gravity |
| title_full_unstemmed | Islands in asymptotically flat 2D gravity |
| title_short | Islands in asymptotically flat 2D gravity |
| title_sort | islands in asymptotically flat 2d gravity |
| topic | 2D Gravity Black Holes Models of Quantum Gravity |
| url | http://link.springer.com/article/10.1007/JHEP07(2020)022 |
| work_keys_str_mv | AT thomashartman islandsinasymptoticallyflat2dgravity AT edgarshaghoulian islandsinasymptoticallyflat2dgravity AT andrewstrominger islandsinasymptoticallyflat2dgravity |