Universal terms of the entanglement entropy in a static closed universe

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dc.creatorRodolfo Reis Soldati
dc.creatorLucas de Souza Menicucci
dc.creatorNelson de Oliveira Yokomizo
dc.date.accessioned2026-03-13T15:59:11Z
dc.date.issued2021-12-20
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.identifier.doihttps://doi.org/10.1103/PhysRevD.104.125016
dc.identifier.issn2470-0029
dc.identifier.urihttps://hdl.handle.net/1843/2130
dc.languageInglêspt_BR
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review D
dc.rightsAcesso aberto
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Brazilen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/br/
dc.subjectEmaranhamento
dc.subjectTeoria de campos
dc.subject.otherEntanglement in field theory
dc.subject.otherLattice field theory
dc.subject.otherQuantum fields in curved spacetime
dc.titleUniversal terms of the entanglement entropy in a static closed universept_BR
dc.typeArtigo de periódico
local.citation.epage125016-18
local.citation.issue12
local.citation.spage125016-1
local.citation.volume104
local.creator.Latteshttps://lattes.cnpq.br/0323881141533439
local.creator.Latteshttps://lattes.cnpq.br/0118387720658819
local.creator.Latteshttps://lattes.cnpq.br/8910446770279026
local.description.resumoSubdominant contributions to the entanglement entropy of quantum fields include logarithmic corrections to the area law characterized by universal coefficients that are independent of the ultraviolet regulator and capture detailed information on the geometry around the entangling surface. We determine two universal coefficients of the entanglement entropy for a massive scalar field in a static closed universe ℝ×𝕊3 perturbatively and verify the results numerically. The first coefficient describes a well-known generic correction to the area law independent of the geometry of the entangling surface and background. The second coefficient describes a curvature-dependent universal term with a nontrivial dependence on the intrinsic and extrinsic geometries of the entangling surface and curvature of the background. The numerical calculations confirm the analytical results to a high accuracy. The first and second universal coefficients are determined numerically with a relative error with respect to the analytical values of the orders 10−4 and 10−2 , respectively.
local.identifier.orcidhttps://orcid.org/0000-0002-1446-1276
local.identifier.orcidhttps://orcid.org/0000-0002-3875-3345
local.identifier.orcidhttps://orcid.org/0000-0002-0732-8733
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.subject.cnpqCIENCIAS EXATAS E DA TERRA::FISICA
local.url.externahttps://journals.aps.org/prd/abstract/10.1103/PhysRevD.104.125016

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