Effective action for QED with fermion self-interaction in D = 2 and D = 3 dimensions

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAbreu, E. M.C.-
Autor(es): dc.creatorDalmazi, D.-
Autor(es): dc.creatorDe Souza Dutra, A.-
Autor(es): dc.creatorHott, Marcelo-
Data de aceite: dc.date.accessioned2025-08-21T17:42:14Z-
Data de disponibilização: dc.date.available2025-08-21T17:42:14Z-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2022-04-28-
Data de envio: dc.date.issued2002-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1103/PhysRevD.65.125030-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/224294-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/224294-
Descrição: dc.descriptionIn this work we discuss the effect of the quartic fermion self-interaction of Thirring type in QED in D = 2 and D = 3 dimensions. This is done through the computation of the effective action up to quadratic terms in the photon field. We analyze the corresponding nonlocal photon propagators nonperturbatively in k/m, where k is the photon momentum and in the fermion mass. The poles of the propagators were determined numerically by using the MATHEMATICA software. In D = 2 there is always a massless pole whereas for strong enough Thirring coupling a massive pole may appear. For D = 3 there are three regions in parameter space. We may have one or two massive poles or even no pole at all. The interquark static potential is computed analytically in D = 2. We notice that the Thirring interaction contributes with a screening term to the confining linear potential of massive two-dimensional QED (QED2). In D = 3 the static potential must be calculated numerically. The screening nature of the massive QED 3 prevails at any distance, indicating that this is a universal feature of D = 3 electromagnetic interaction. Our results become exact for an infinite number of fermion flavors. © 2002 The American Physical Society.-
Descrição: dc.descriptionUNESP Campus de Guaratinguetá DFQ, Av. Dr. Ariberto Pereira Cunha, 333, CEP 12516-410, Guaratingueta, SP-
Descrição: dc.descriptionUNESP Campus de Guaratinguetá DFQ, Av. Dr. Ariberto Pereira Cunha, 333, CEP 12516-410, Guaratingueta, SP-
Idioma: dc.languageen-
Relação: dc.relationPhysical Review D-
???dc.source???: dc.sourceScopus-
Título: dc.titleEffective action for QED with fermion self-interaction in D = 2 and D = 3 dimensions-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

Não existem arquivos associados a este item.