Superstrata on orbifolded backgrounds
Abstract Some microstates of the Strominger-Vafa black hole are represented by smooth horizonless geometries called superstrata. The standard superstrata are deformations of AdS3 × S 3, but there are also generalizations of superstrata on the orbifold (AdS3 × S 3)/ℤ p . In this paper, we discuss asp...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-02-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP02(2023)099 |
| _version_ | 1797779090369937408 |
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| author | Masaki Shigemori |
| author_facet | Masaki Shigemori |
| author_sort | Masaki Shigemori |
| collection | DOAJ |
| description | Abstract Some microstates of the Strominger-Vafa black hole are represented by smooth horizonless geometries called superstrata. The standard superstrata are deformations of AdS3 × S 3, but there are also generalizations of superstrata on the orbifold (AdS3 × S 3)/ℤ p . In this paper, we discuss aspects of such orbifolded superstrata. We present a CFT perspective on the structure of orbifolded superstrata, showing that they can be constructed in a p-covering space of the orbifold CFT just as the standard superstrata. We also explicitly write down and study the geometry of the orbifolded superstrata, focusing on the difference from the non-orbifold case, p = 1. We discuss further generalization of superstrata to the ones on a fractional spectral flow of (AdS3 × S 3)/ℤ p . This generalization involves new fractional mode excitations of the CFT side. We estimate the number of those generalized superstrata, and show that their entropy is too small to account for the Strominger-Vafa entropy. We will discuss some implications of this result, related to the typical microstates of the black hole and the relevant supersymmetry index. |
| first_indexed | 2024-03-12T23:26:43Z |
| format | Article |
| id | doaj.art-fe3e15a42868469ea83dfe35c61c9175 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T23:26:43Z |
| publishDate | 2023-02-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-fe3e15a42868469ea83dfe35c61c91752023-07-16T11:07:55ZengSpringerOpenJournal of High Energy Physics1029-84792023-02-012023213510.1007/JHEP02(2023)099Superstrata on orbifolded backgroundsMasaki Shigemori0Department of PhysicsAbstract Some microstates of the Strominger-Vafa black hole are represented by smooth horizonless geometries called superstrata. The standard superstrata are deformations of AdS3 × S 3, but there are also generalizations of superstrata on the orbifold (AdS3 × S 3)/ℤ p . In this paper, we discuss aspects of such orbifolded superstrata. We present a CFT perspective on the structure of orbifolded superstrata, showing that they can be constructed in a p-covering space of the orbifold CFT just as the standard superstrata. We also explicitly write down and study the geometry of the orbifolded superstrata, focusing on the difference from the non-orbifold case, p = 1. We discuss further generalization of superstrata to the ones on a fractional spectral flow of (AdS3 × S 3)/ℤ p . This generalization involves new fractional mode excitations of the CFT side. We estimate the number of those generalized superstrata, and show that their entropy is too small to account for the Strominger-Vafa entropy. We will discuss some implications of this result, related to the typical microstates of the black hole and the relevant supersymmetry index.https://doi.org/10.1007/JHEP02(2023)099AdS-CFT CorrespondenceBlack Holes in String TheoryClassical Theories of GravitySpacetime Singularities |
| spellingShingle | Masaki Shigemori Superstrata on orbifolded backgrounds Journal of High Energy Physics AdS-CFT Correspondence Black Holes in String Theory Classical Theories of Gravity Spacetime Singularities |
| title | Superstrata on orbifolded backgrounds |
| title_full | Superstrata on orbifolded backgrounds |
| title_fullStr | Superstrata on orbifolded backgrounds |
| title_full_unstemmed | Superstrata on orbifolded backgrounds |
| title_short | Superstrata on orbifolded backgrounds |
| title_sort | superstrata on orbifolded backgrounds |
| topic | AdS-CFT Correspondence Black Holes in String Theory Classical Theories of Gravity Spacetime Singularities |
| url | https://doi.org/10.1007/JHEP02(2023)099 |
| work_keys_str_mv | AT masakishigemori superstrataonorbifoldedbackgrounds |