Opacity from Loops in AdS
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/JHEP02(2021)089 http://hdl.handle.net/11449/207624 |
Resumo: | We investigate how quantum dynamics affects the propagation of a scalar field in Lorentzian AdS. We work in momentum space, in which the propagator admits two spectral representations (denoted “conformal” and “momentum”) in addition to a closed-form one, and all have a simple split structure. Focusing on scalar bubbles, we compute the imaginary part of the self-energy ImΠ in the three representations, which involves the evaluation of seemingly very different objects. We explicitly prove their equivalence in any dimension, and derive some elementary and asymptotic properties of ImΠ. Using a WKB-like approach in the timelike region, we evaluate the propagator dressed with the imaginary part of the self-energy. We find that the dressing from loops exponentially dampens the propagator when one of the endpoints is in the IR region, rendering this region opaque to propagation. This suppression may have implications for field-theoretical model-building in AdS. We argue that in the effective theory (EFT) paradigm, opacity of the IR region induced by higher dimensional operators censors the region of EFT breakdown. This confirms earlier expectations from the literature. Specializing to AdS5, we determine a universal contribution to opacity from gravity. |
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Repositório Institucional da UNESP |
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Opacity from Loops in AdSAdS-CFT CorrespondenceEffective Field TheoriesField Theories in Higher DimensionsWe investigate how quantum dynamics affects the propagation of a scalar field in Lorentzian AdS. We work in momentum space, in which the propagator admits two spectral representations (denoted “conformal” and “momentum”) in addition to a closed-form one, and all have a simple split structure. Focusing on scalar bubbles, we compute the imaginary part of the self-energy ImΠ in the three representations, which involves the evaluation of seemingly very different objects. We explicitly prove their equivalence in any dimension, and derive some elementary and asymptotic properties of ImΠ. Using a WKB-like approach in the timelike region, we evaluate the propagator dressed with the imaginary part of the self-energy. We find that the dressing from loops exponentially dampens the propagator when one of the endpoints is in the IR region, rendering this region opaque to propagation. This suppression may have implications for field-theoretical model-building in AdS. We argue that in the effective theory (EFT) paradigm, opacity of the IR region induced by higher dimensional operators censors the region of EFT breakdown. This confirms earlier expectations from the literature. Specializing to AdS5, we determine a universal contribution to opacity from gravity.Department of Physics and Astronomy University of CaliforniaICTP South American Institute for Fundamental Research and IFT-UNESP, R. Dr. Bento Teobaldo FerrazICTP South American Institute for Fundamental Research and IFT-UNESP, R. Dr. Bento Teobaldo FerrazUniversity of CaliforniaUniversidade Estadual Paulista (Unesp)Costantino, AlexandriaFichet, Sylvain [UNESP]2021-06-25T10:58:15Z2021-06-25T10:58:15Z2021-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1007/JHEP02(2021)089Journal of High Energy Physics, v. 2021, n. 2, 2021.1029-8479http://hdl.handle.net/11449/20762410.1007/JHEP02(2021)0892-s2.0-85104450764Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of High Energy Physicsinfo:eu-repo/semantics/openAccess2021-10-23T17:45:47Zoai:repositorio.unesp.br:11449/207624Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:21:31.978786Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Opacity from Loops in AdS |
title |
Opacity from Loops in AdS |
spellingShingle |
Opacity from Loops in AdS Costantino, Alexandria AdS-CFT Correspondence Effective Field Theories Field Theories in Higher Dimensions |
title_short |
Opacity from Loops in AdS |
title_full |
Opacity from Loops in AdS |
title_fullStr |
Opacity from Loops in AdS |
title_full_unstemmed |
Opacity from Loops in AdS |
title_sort |
Opacity from Loops in AdS |
author |
Costantino, Alexandria |
author_facet |
Costantino, Alexandria Fichet, Sylvain [UNESP] |
author_role |
author |
author2 |
Fichet, Sylvain [UNESP] |
author2_role |
author |
dc.contributor.none.fl_str_mv |
University of California Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Costantino, Alexandria Fichet, Sylvain [UNESP] |
dc.subject.por.fl_str_mv |
AdS-CFT Correspondence Effective Field Theories Field Theories in Higher Dimensions |
topic |
AdS-CFT Correspondence Effective Field Theories Field Theories in Higher Dimensions |
description |
We investigate how quantum dynamics affects the propagation of a scalar field in Lorentzian AdS. We work in momentum space, in which the propagator admits two spectral representations (denoted “conformal” and “momentum”) in addition to a closed-form one, and all have a simple split structure. Focusing on scalar bubbles, we compute the imaginary part of the self-energy ImΠ in the three representations, which involves the evaluation of seemingly very different objects. We explicitly prove their equivalence in any dimension, and derive some elementary and asymptotic properties of ImΠ. Using a WKB-like approach in the timelike region, we evaluate the propagator dressed with the imaginary part of the self-energy. We find that the dressing from loops exponentially dampens the propagator when one of the endpoints is in the IR region, rendering this region opaque to propagation. This suppression may have implications for field-theoretical model-building in AdS. We argue that in the effective theory (EFT) paradigm, opacity of the IR region induced by higher dimensional operators censors the region of EFT breakdown. This confirms earlier expectations from the literature. Specializing to AdS5, we determine a universal contribution to opacity from gravity. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T10:58:15Z 2021-06-25T10:58:15Z 2021-02-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/JHEP02(2021)089 Journal of High Energy Physics, v. 2021, n. 2, 2021. 1029-8479 http://hdl.handle.net/11449/207624 10.1007/JHEP02(2021)089 2-s2.0-85104450764 |
url |
http://dx.doi.org/10.1007/JHEP02(2021)089 http://hdl.handle.net/11449/207624 |
identifier_str_mv |
Journal of High Energy Physics, v. 2021, n. 2, 2021. 1029-8479 10.1007/JHEP02(2021)089 2-s2.0-85104450764 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of High Energy Physics |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129057930346496 |