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Título

Supertwistors, massive superparticles and kappa-symmetry

AutorAzcárraga, José A. de ; Izquierdo, José Manuel; Lukierski, J.
Palabras clavep-branes
Extended supersymmetry
Superspaces
Fecha de publicación15-ene-2009
EditorInstitute of Physics Publishing
CitaciónJHEP01(2009)041
ResumenWe consider a D = 4 two-twistor lagrangian for a massive particle that incorporates the mass-shell condition in an algebraic way, and extend it to a two-supertwistor model with N = 2 supersymmetry and central charge identified with the mass. In the purely supertwistorial picture the two D = 4 supertwistors are coupled through a Wess-Zumino term in their fermionic sector. We demonstrate how the K-gauge symmetry appears in the purely supertwistorial formulation and reduces by half the fermionic degrees of freedom of the two supertwistors; a formulation of the model in terms of K-invariant degrees of freedom is also obtained. We show that the K-invariant supertwistor coordinates can be obtained by dimensional (D=6 -> D=4) reduction from a D = 6 supertwistor. We derive as well by 6 -> A reduction the N = 2, D=4 massive superparticle model with Wess-Zumino term introduced in 1982. Finally, we comment on general superparticle models constructed with more than two supertwistors.
Versión del editorhttp://dx.doi.org/10.1088/1126-6708/2009/01/041
URIhttp://hdl.handle.net/10261/15852
DOI10.1088/1126-6708/2009/01/041
ISSN1126-6708
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