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Worldsheet computation of heavy-light correlators

Worldsheet computation of heavy-light correlators
Worldsheet computation of heavy-light correlators

We compute a large collection of string worldsheet correlators describing light probes interacting with heavy black hole microstates. The heavy states consist of NS5 branes carrying momentum and/or fundamental string charge. In the fivebrane decoupling limit, worldsheet string theory on a family of such backgrounds is given by exactly solvable null-gauged WZW models. We construct physical vertex operators in these cosets, including all massless fluctuations. We compute a large class of novel heavy-light-light-heavy correlators in the AdS 3 limit, where the light operators include those dual to chiral primaries of the holographically dual CFT. We compare a subset of these correlators to the holographic CFT at the symmetric product orbifold point, and find precise agreement in all cases, including for light operators in twisted sectors of the orbifold CFT. The agreement is highly non-trivial, and includes amplitudes that describe the analogue of Hawking radiation for these microstates. We further derive a formula for worldsheet correlators consisting of n light insertions on these backgrounds, and discuss which subset of these correlators are likely to be protected. As a test, we compute a heavy-light five-point function, obtaining precisely the same result both from the worldsheet and the symmetric orbifold CFT. This paper is a companion to and extension of [1].

gr-qc, hep-th, Black Holes in String Theory, AdS-CFT Correspondence, Conformal Field Models in String Theory
1126-6708
Bufalini, Davide
cd5e59b7-4a8f-4105-8612-961a386b3fa8
Iguri, Sergio
8b362c8e-63cf-446c-9fc0-004a2a2d028b
Kovensky, Nicolas
6fdce7c8-51ce-4d21-8223-e16bd1a182c8
Turton, David
6ce84b30-3cc0-42aa-ace5-f298d4260e9b
Bufalini, Davide
cd5e59b7-4a8f-4105-8612-961a386b3fa8
Iguri, Sergio
8b362c8e-63cf-446c-9fc0-004a2a2d028b
Kovensky, Nicolas
6fdce7c8-51ce-4d21-8223-e16bd1a182c8
Turton, David
6ce84b30-3cc0-42aa-ace5-f298d4260e9b

Bufalini, Davide, Iguri, Sergio, Kovensky, Nicolas and Turton, David (2023) Worldsheet computation of heavy-light correlators. Journal of High Energy Physics, 2023 (3), [66]. (doi:10.1007/JHEP03(2023)066).

Record type: Article

Abstract

We compute a large collection of string worldsheet correlators describing light probes interacting with heavy black hole microstates. The heavy states consist of NS5 branes carrying momentum and/or fundamental string charge. In the fivebrane decoupling limit, worldsheet string theory on a family of such backgrounds is given by exactly solvable null-gauged WZW models. We construct physical vertex operators in these cosets, including all massless fluctuations. We compute a large class of novel heavy-light-light-heavy correlators in the AdS 3 limit, where the light operators include those dual to chiral primaries of the holographically dual CFT. We compare a subset of these correlators to the holographic CFT at the symmetric product orbifold point, and find precise agreement in all cases, including for light operators in twisted sectors of the orbifold CFT. The agreement is highly non-trivial, and includes amplitudes that describe the analogue of Hawking radiation for these microstates. We further derive a formula for worldsheet correlators consisting of n light insertions on these backgrounds, and discuss which subset of these correlators are likely to be protected. As a test, we compute a heavy-light five-point function, obtaining precisely the same result both from the worldsheet and the symmetric orbifold CFT. This paper is a companion to and extension of [1].

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2210.15313v1 - Author's Original
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JHEP03(2023)066
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More information

Accepted/In Press date: 22 February 2023
Published date: 10 March 2023
Additional Information: Publisher Copyright: © 2023, The Author(s).
Keywords: gr-qc, hep-th, Black Holes in String Theory, AdS-CFT Correspondence, Conformal Field Models in String Theory

Identifiers

Local EPrints ID: 472513
URI: http://eprints.soton.ac.uk/id/eprint/472513
ISSN: 1126-6708
PURE UUID: b0f79f30-c3da-43ca-bf46-15acd5b755a3
ORCID for Davide Bufalini: ORCID iD orcid.org/0000-0001-8700-4394
ORCID for David Turton: ORCID iD orcid.org/0000-0002-9902-2116

Catalogue record

Date deposited: 07 Dec 2022 17:45
Last modified: 17 Mar 2024 03:48

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Contributors

Author: Davide Bufalini ORCID iD
Author: Sergio Iguri
Author: Nicolas Kovensky
Author: David Turton ORCID iD

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