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dc.contributor.authorFerrari, Alysson Fábiopt_BR
dc.contributor.authorGirotti, Horacio Oscarpt_BR
dc.contributor.authorGomes, Marcelopt_BR
dc.contributor.authorPetrov, Albert Yu.pt_BR
dc.contributor.authorRibeiro, Anderson Andre Genro Alvespt_BR
dc.contributor.authorRivelles, Victor O.pt_BR
dc.contributor.authorSilva, Adilson J. dapt_BR
dc.date.accessioned2014-10-01T02:10:48Zpt_BR
dc.date.issued2004pt_BR
dc.identifier.issn1550-7998pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/104020pt_BR
dc.description.abstractCommutative four dimensional supersymmetric Yang-Mills (SYM) theory is known to be renormalizable for N=1,2, and finite for N=4. However, in the noncommutative version of the model the UV/IR mechanism gives rise to infrared divergences which may spoil the perturbative expansion. In this work we pursue the study of the consistency of the N=1,2,4 noncommutative supersymmetric Yang-Mills theory with gauge group U(N) (NCSYM). We employ the covariant superfield framework to compute the one-loop corrections to the two-and three-point functions of the gauge superfield V. It is found that the cancellation of the harmful UV/IR infrared divergences only takes place in the fundamental representation of the gauge group. We argue that this is in agreement with the low energy limit of the open superstring in the presence of an external magnetic field. As expected, the planar sector of the two-point function of the V superfield exhibits UVdivergences. They are found to cancel, in the Feynman gauge, for the maximally extended N=4 supersymmetric theory. This gives support to the belief that the N=4 NCSYM theory is UV finite.en
dc.format.mimetypeapplication/pdf
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. D, Particles, fields, gravitation, and cosmology. College Park. Vol. 70, no. 8 (Oct. 2004), 085012 11p.pt_BR
dc.rightsOpen Accessen
dc.subjectDiagramas de feynmanpt_BR
dc.subjectTeoria de Yang-Millspt_BR
dc.subjectSimetria unitáriapt_BR
dc.titleTowards a consistent noncommutative supersymmetric Yang-Mills theory : superfield covariant analysispt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000445278pt_BR
dc.type.originEstrangeiropt_BR


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