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dc.contributor.authorBufalo, R.-
dc.contributor.authorPimentel, B. M.-
dc.contributor.authorSoto, D. E.-
dc.date.accessioned2015-03-18T15:53:16Z-
dc.date.accessioned2016-10-25T20:24:43Z-
dc.date.available2015-03-18T15:53:16Z-
dc.date.available2016-10-25T20:24:43Z-
dc.date.issued2014-12-01-
dc.identifierhttp://dx.doi.org/10.1016/j.aop.2014.08.004-
dc.identifier.citationAnnals Of Physics. San Diego: Academic Press Inc Elsevier Science, v. 351, p. 1034-1061, 2014.-
dc.identifier.issn0003-4916-
dc.identifier.urihttp://hdl.handle.net/11449/116410-
dc.identifier.urihttp://acervodigital.unesp.br/handle/11449/116410-
dc.description.abstractIn this work we present the study of light-front field theories in the realm of the axiomatic theory. It is known that when one uses the light-cone gauge pathological poles (k(+))(-n) arises, demanding a prescription to be employed in order to tame these ill-defined poles and to have the correct Feynman integrals due to the lack of Wick rotation in such theories. In order to shed a new light on this long standing problem we present here a discussion based on the use of rigorous mathematical machinery of the distributional theory combined with physical concepts, such as causality, to show how to deal with these singular propagators in a general fashion without making use of any prescription. The first step of our development will consist in showing how the analytic representation for propagators arises by requiring general physical properties within the framework of Wightman's. formalism. From that we shall determine the equal-time (anti)commutation relations in the light-front form for the scalar and fermionic fields, as well as for the dynamical components of the electromagnetic field. In conclusion, we introduce the Epstein-Glaser causal method in order to have a mathematical rigorous description of the free propagators of the theory, allowing us to discuss a general treatment for propagators of the type (k(+))(-n). Afterwards, we show that at given conditions our results reproduce known prescriptions in the literature. (C) 2014 Elsevier Inc. All rights reserved.en
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
dc.format.extent1034-1061-
dc.language.isoeng-
dc.publisherElsevier B.V.-
dc.sourceWeb of Science-
dc.subjectLight-front field theoryen
dc.subjectAnalytic representation for propagatoren
dc.subjectEpstein-Glaser causal methoden
dc.subjectLight-front propagator poleen
dc.titleThe Epstein-Glaser causal approach to the light-front QED(4). I: Free theoryen
dc.typeoutro-
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil-
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01140070 Sao Paulo, Brazil-
dc.description.sponsorshipIdFAPESP: 11/20653-3-
dc.identifier.doi10.1016/j.aop.2014.08.004-
dc.identifier.wosWOS:000346451900059-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofAnnals Of Physics-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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