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Space-time Vector Supersymmetry and Massive Spinning Particle

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arxiv 0801.2702 v2 pith:UE4W4MAK submitted 2008-01-17 hep-th

Space-time Vector Supersymmetry and Massive Spinning Particle

Roberto Casalbuoni (Department of Physics , University of Florence , INFN-Florence , Galileo Galilei Institute , Florence , Italy) , Joaquim Gomis (PH-TH Division , CERN
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Geneva Switzerland Departament d'Estructura i Constituents de la Mat\`eria Institut de Ciencies del Cosmos Universitat de Barcelona Diagonal Barcelona Spain) Kiyoshi Kamimura (Department of Physics Toho University Funabashi Japan) Giorgio Longhi (Department of Physics
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We construct the action of a relativistic spinning particle from a non-linear realization of a space-time odd vector extension of the Poincar\'e group. For particular values of the parameters appearing in the lagrangian the model has a gauge world-line supersymmetry.{As a consequence of this local symmetry there are BPS solutions in the model preserving 1/5 of the supersymmetries.} A supersymmetric invariant quantization produces two decoupled 4d Dirac equations.

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