Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/68075
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Suzuki, A. T. | - |
dc.contributor.author | Sales, J. H O | - |
dc.date.accessioned | 2014-05-27T11:21:15Z | - |
dc.date.accessioned | 2016-10-25T18:20:20Z | - |
dc.date.available | 2014-05-27T11:21:15Z | - |
dc.date.available | 2016-10-25T18:20:20Z | - |
dc.date.issued | 2004-12-14 | - |
dc.identifier | http://dx.doi.org/10.1142/S021773230401566X | - |
dc.identifier.citation | Modern Physics Letters A, v. 19, n. 38, p. 2831-2844, 2004. | - |
dc.identifier.issn | 0217-7323 | - |
dc.identifier.uri | http://hdl.handle.net/11449/68075 | - |
dc.identifier.uri | http://acervodigital.unesp.br/handle/11449/68075 | - |
dc.description.abstract | Gauge fields in the light front are traditionally addressed via, the employment of an algebraic condition n·A = 0 in the Lagrangian density, where Aμ is the gauge field (Abelian or non-Abelian) and nμ is the external, light-like, constant vector which defines the gauge proper. However, this condition though necessary is not sufficient to fix the gauge completely; there still remains a residual gauge freedom that must be addressed appropriately. To do this, we need to define the condition (n·A) (∂·A) = 0 with n·A = 0 = ∂·A. The implementation of this condition in the theory gives rise to a gauge boson propagator (in momentum space) leading to conspicuous nonlocal singularities of the type (k·n)-α where α = 1, 2. These singularities must be conveniently treated, and by convenient we mean not only mathemathically well-defined but physically sound and meaningful as well. In calculating such a propagator for one and two noncovariant gauge bosons those singularities demand from the outset the use of a prescription such as the Mandelstam-Leibbrandt (ML) one. We show that the implementation of the ML prescription does not remove certain pathologies associated with zero modes. However we present a causal, singularity-softening prescription and show how to keep causality from being broken without the zero mode nuisance and letting only the propagation of physical degrees of freedom. | en |
dc.format.extent | 2831-2844 | - |
dc.language.iso | eng | - |
dc.source | Scopus | - |
dc.subject | Light front | en |
dc.subject | Quantum gauge bosons | en |
dc.subject | Singularities in Feynman propagators | en |
dc.subject | boson | en |
dc.subject | calculation | en |
dc.subject | density | en |
dc.subject | electric field | en |
dc.subject | hardness | en |
dc.subject | light | en |
dc.subject | mathematics | en |
dc.subject | quantum chemistry | en |
dc.subject | sound | en |
dc.subject | space | en |
dc.subject | theory | en |
dc.title | Quantum gauge boson propagators in the light front | en |
dc.type | outro | - |
dc.contributor.institution | North Carolina State University | - |
dc.contributor.institution | Univ. Federal de Itajubá | - |
dc.contributor.institution | Universidade Estadual Paulista (UNESP) | - |
dc.description.affiliation | Department of Physics North Carolina State University, Raleigh, NC 27695-8202 | - |
dc.description.affiliation | Instituto de Ciências Univ. Federal de Itajubá, CEP 37500-000, Itajubá, MG | - |
dc.description.affiliation | Instituto de Física Teórica-UNESP, Rua, Pamplona 145, 01405-900, São Paulo, SP | - |
dc.description.affiliationUnesp | Instituto de Física Teórica-UNESP, Rua, Pamplona 145, 01405-900, São Paulo, SP | - |
dc.identifier.doi | 10.1142/S021773230401566X | - |
dc.rights.accessRights | Acesso restrito | - |
dc.relation.ispartof | Modern Physics Letters A | - |
dc.identifier.scopus | 2-s2.0-11244287594 | - |
Appears in Collections: | Artigos, TCCs, Teses e Dissertações da Unesp |
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.