Energy conditions, especially the null energy condition (NEC), are generically imposed on solutions to retain a physically sensible classical field theory and they also play an important role in the AdS/CFT duality. Using this duality, we study non-trivially deformed strongly coupled quantum field theories at large-N c . The corresponding dual classical gravity constructions entail the use of radially non-monotonic D-brane distributions. The distributions are phenomenological in the sense that they do not correspond to the smearing of known probe D-brane embeddings. The gravity backgrounds are supersymmetric and hence perturbatively stable, and do not possess curvature singularities. There are no short-cuts through the bulk spacetime for signal propagation which assures that the field theory duals are causal. Nevertheless, some of our solutions violate the NEC in the gravity dual. In these cases the non-monotonicity of the D-brane distributions is reflected in the properties of the renormalization group flow: none of the c-functions proposed in the literature are monotonic. This further suggests that the non-monotonic behavior of the c-functions within previously known anisotropic backgrounds does not originate from the breaking of Lorentz invariance. We surmise that NEC violations induced by quantum corrections also need to be considered in holographic duals, but can be studied already at the classical level.
{ "_oai": { "updated": "2022-01-24T13:09:09Z", "id": "oai:repo.scoap3.org:65387", "sets": [ "JHEP" ] }, "authors": [ { "affiliations": [ { "country": "Spain", "value": "Department of Physics and Instituto de Ciencias y Tecnolog\u00edas Espaciales de Asturias (ICTEA), Universidad de Oviedo, c/Federico Garc\u00eda Lorca 18, Oviedo, E-33007/33004, Spain", "organization": "Universidad de Oviedo" } ], "surname": "Hoyos", "email": "hoyoscarlos@uniovi.es", "full_name": "Hoyos, Carlos", "given_names": "Carlos" }, { "affiliations": [ { "country": "Finland", "value": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki, Helsinki, FIN-00014, Finland", "organization": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki" } ], "surname": "Jokela", "email": "niko.jokela@helsinki.fi", "full_name": "Jokela, Niko", "given_names": "Niko" }, { "affiliations": [ { "country": "Finland", "value": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki, Helsinki, FIN-00014, Finland", "organization": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki" }, { "country": "UK", "value": "Mathematical Sciences and STAG Research Center, University of Southampton, University Road, Southampton, SO17 1BJ, U.K.", "organization": "University of Southampton" } ], "surname": "Pen\u00edn", "email": "jmanpen@gmail.com", "full_name": "Pen\u00edn, Jos\u00e9", "given_names": "Jos\u00e9" }, { "affiliations": [ { "country": "Spain", "value": "Departamento de F\u00edsica de Part\u00edculas and Instituto Galego de F\u00edsica de Altas Enerx\u00edas (IGFAE), Universidade de Santiago de Compostela, R\u00faa de Xoaqu\u00edn D\u00edaz de R\u00e1bago s/n, Santiago de Compostela, E-15782, Spain", "organization": "Universidade de Santiago de Compostela" } ], "surname": "Ramallo", "email": "alfonso@fpaxp1.usc.es", "full_name": "Ramallo, Alfonso", "given_names": "Alfonso" }, { "affiliations": [ { "country": "Finland", "value": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki, Helsinki, FIN-00014, Finland", "organization": "Department of Physics and Helsinki Institute of Physics, P.O. Box 64, University of Helsinki" } ], "surname": "Tarr\u00edo", "email": "javier.tarrio@helsinki.fi", "full_name": "Tarr\u00edo, Javier", "given_names": "Javier" } ], "titles": [ { "source": "Springer", "title": "Risking your NEC" } ], "dois": [ { "value": "10.1007/JHEP10(2021)112" } ], "publication_info": [ { "page_end": "53", "journal_title": "Journal of High Energy Physics", "material": "article", "journal_volume": "2021", "artid": "JHEP10(2021)112", "year": 2021, "page_start": "1", "journal_issue": "10" } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2022-01-24T00:34:37.016977", "source": "Springer", "method": "Springer", "submission_number": "c3b70ed27cac11ec9421ee5ceb395428" }, "page_nr": [ 53 ], "license": [ { "url": "https://creativecommons.org/licenses//by/4.0", "license": "CC-BY-4.0" } ], "copyright": [ { "holder": "The Author(s)", "year": "2021" } ], "control_number": "65387", "record_creation_date": "2021-10-16T06:30:46.998271", "_files": [ { "checksum": "md5:e35d736f8379af4caab7e6da928a107a", "filetype": "xml", "bucket": "0843f324-25ff-4324-b77d-f906912486eb", "version_id": "37a51705-e416-401b-874d-a6513beb103d", "key": "10.1007/JHEP10(2021)112.xml", "size": 14955 }, { "checksum": "md5:1eb1814242abbe86aaae4ffa74dc8e26", "filetype": "pdf/a", "bucket": "0843f324-25ff-4324-b77d-f906912486eb", "version_id": "60ae7d08-73c7-4c4b-b501-cc35049a5ebb", "key": "10.1007/JHEP10(2021)112_a.pdf", "size": 982700 } ], "collections": [ { "primary": "Journal of High Energy Physics" } ], "arxiv_eprints": [ { "value": "2104.11749" } ], "abstracts": [ { "source": "Springer", "value": "Energy conditions, especially the null energy condition (NEC), are generically imposed on solutions to retain a physically sensible classical field theory and they also play an important role in the AdS/CFT duality. Using this duality, we study non-trivially deformed strongly coupled quantum field theories at large-N c . The corresponding dual classical gravity constructions entail the use of radially non-monotonic D-brane distributions. The distributions are phenomenological in the sense that they do not correspond to the smearing of known probe D-brane embeddings. The gravity backgrounds are supersymmetric and hence perturbatively stable, and do not possess curvature singularities. There are no short-cuts through the bulk spacetime for signal propagation which assures that the field theory duals are causal. Nevertheless, some of our solutions violate the NEC in the gravity dual. In these cases the non-monotonicity of the D-brane distributions is reflected in the properties of the renormalization group flow: none of the c-functions proposed in the literature are monotonic. This further suggests that the non-monotonic behavior of the c-functions within previously known anisotropic backgrounds does not originate from the breaking of Lorentz invariance. We surmise that NEC violations induced by quantum corrections also need to be considered in holographic duals, but can be studied already at the classical level." } ], "imprints": [ { "date": "2021-10-14", "publisher": "Springer" } ] }