Born-Oppenheimer approximation in an effective field theory language

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorBrambilla, Nora-
Autor(es): dc.creatorKrein, Gastao-
Autor(es): dc.creatorCastella, Jaume Tarrus-
Autor(es): dc.creatorVairo, Antonio-
Data de aceite: dc.date.accessioned2021-03-10T23:56:55Z-
Data de disponibilização: dc.date.available2021-03-10T23:56:55Z-
Data de envio: dc.date.issued2018-11-26-
Data de envio: dc.date.issued2018-11-26-
Data de envio: dc.date.issued2018-01-25-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.97.016016-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/163770-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/163770-
Descrição: dc.descriptionDFG-
Descrição: dc.descriptionNSFC-
Descrição: dc.descriptionDFG cluster of excellence Origin and Structure of the Universe-
Descrição: dc.descriptionBayerische Hochschulzentrum fur Lateinamerika (BAYLAT) of the Bayerischen Staatsministeriums fur Bildung und Kultus, Wissenschaft und Kunst (StMBW)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionBavarian State Ministry of Education, Science and the Arts through the TUM International Center Visiting Program-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionBayerische Hochschulzentrum fur Lateinamerika (BAYLAT) of the Bayerischen Staatsministeriums fur Bildung und Kultus, Wissenschaft und Kunst (StMBW): 914-20.1.3-
Descrição: dc.descriptionBayerische Hochschulzentrum fur Lateinamerika (BAYLAT) of the Bayerischen Staatsministeriums fur Bildung und Kultus, Wissenschaft und Kunst (StMBW): 2013/50841-1-
Descrição: dc.descriptionProcesso FAPESP: 914-20.1.3-
Descrição: dc.descriptionProcesso FAPESP: 2013/50841-1-
Descrição: dc.descriptionCNPq: 305894/2009-9-
Descrição: dc.descriptionProcesso FAPESP: 2013/01907-0-
Descrição: dc.descriptionThe Born-Oppenheimer approximation is the standard tool for the study of molecular systems. It is founded on the observation that the energy scale of the electron dynamics in a molecule is larger than that of the nuclei. A very similar physical picture can be used to describe QCD states containing heavy quarks as well as light-quarks or gluonic excitations. In this work, we derive the Born-Oppenheimer approximation for QED molecular systems in an effective field theory framework by sequentially integrating out degrees of freedom living at energies above the typical energy scale where the dynamics of the heavy degrees of freedom occurs. In particular, we compute the matching coefficients of the effective field theory for the case of the H-2(+) diatomic molecule that are relevant to compute its spectrum up to O(m alpha(5)) thorn. Ultrasoft photon loops contribute at this order, being ultimately responsible for the molecular Lamb shift. In the effective field theory the scaling of all the operators is homogeneous, which facilitates the determination of all the relevant contributions, an observation that may become useful for high-precision calculations. Using the above case as a guidance, we construct under some conditions an effective field theory for QCD states formed by a color-octet heavy quark-antiquark pair bound with a color-octet light-quark pair or excited gluonic state, highlighting the similarities and differences between the QED and QCD systems. Assuming that the multipole expansion is applicable, we construct the heavy-quark potential up to next-to-leading order in the multipole expansion in terms of nonperturbative matching coefficients to be obtained from lattice QCD.-
Formato: dc.format16-
Idioma: dc.languageen-
Publicador: dc.publisherAmer Physical Soc-
Relação: dc.relationPhysical Review D-
Relação: dc.relation1,801-
Direitos: dc.rightsopenAccess-
Título: dc.titleBorn-Oppenheimer approximation in an effective field theory language-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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