Comments on spin operators and spin-polarization states of 2+1 fermions

dc.contributor.authorGavrilov, S. P.
dc.contributor.authorGitman, D. M.
dc.contributor.authorTomazelli, J. L.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T15:26:20Z
dc.date.available2014-05-20T15:26:20Z
dc.date.issued2005-02-01
dc.description.abstractIn this brief article we discuss spin-polarization operators and spin-polarization states of 2 + 1 massive Dirac fermions and find a convenient representation by the help of 4-spinors for their description. We stress that in particular the use of such a representation allows us to introduce the conserved covariant spin operator in the 2 + 1 field theory. Another advantage of this representation is related to the pseudoclassical limit of the theory. Indeed, quantization of the pseudoclassical model of a spinning particle in 2 + 1 dimensions leads to the 4-spinor representation as the adequate realization of the operator algebra, where the corresponding operator of a first-class constraint, which cannot be gauged out by imposing the gauge condition, is just the covariant operator previously introduced in the quantum theory.en
dc.description.affiliationUNESP, Dept Quim & Fis, São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05315970 São Paulo, Brazil
dc.description.affiliationUnespUNESP, Dept Quim & Fis, São Paulo, Brazil
dc.format.extent245-248
dc.identifierhttp://dx.doi.org/10.1140/epjc/s2004-02026-9
dc.identifier.citationEuropean Physical Journal C. New York: Springer, v. 39, n. 2, p. 245-248, 2005.
dc.identifier.doi10.1140/epjc/s2004-02026-9
dc.identifier.issn1434-6044
dc.identifier.urihttp://hdl.handle.net/11449/36509
dc.identifier.wosWOS:000226628700012
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofEuropean Physical Journal C
dc.relation.ispartofjcr5.172
dc.relation.ispartofsjr2,022
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleComments on spin operators and spin-polarization states of 2+1 fermionsen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dcterms.rightsHolderSpringer

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