Unitarity and nonrelativistic potential energy in a higher-order Lorentz symmetry breaking electromagnetic model
Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
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Data(s) |
18/03/2015
18/03/2015
10/12/2014
|
Resumo |
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) The Lorentz-violating model proposed by Myers and Pospelov suffers from a higher-derivative pathology due to a dimension-five operator. In particular, its electromagnetic sector exhibits a spectrum which contains, in addition to an expected massless photon, ghost contributions that could (in principle) spoil the unitarity of the model. We find that unitarity at tree level can be assured for pure spacelike, timelike, and lightlike background four-vectors (the last two under restrictions upon the allowed momenta). We then analyze the nonrelativistic interparticle potential energy behavior for different background four-vectors and compare to the usual Coulomb potential. |
Formato |
5 |
Identificador |
http://dx.doi.org/10.1103/PhysRevD.90.127703 Physical Review D. College Pk: Amer Physical Soc, v. 90, n. 12, 5 p., 2014. 1550-7998 http://hdl.handle.net/11449/117058 10.1103/PhysRevD.90.127703 WOS:000346096500005 WOS000346096500005.pdf |
Idioma(s) |
eng |
Publicador |
Amer Physical Soc |
Relação |
Physical Review D |
Direitos |
closedAccess |
Tipo |
info:eu-repo/semantics/article |