Supertwistors, massive superparticles and k-symmetry

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dc.creatorde Azcarraga, J. A.
dc.creatorIzquierdo, J. M.
dc.creatorLukierski, J.
dc.date2008-08-15
dc.date2009-01-07
dc.date.accessioned2026-07-07T12:34:15Z
dc.date.available2026-07-07T12:34:15Z
dc.descriptionWe 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 kappa-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 kappa-invariant degrees of freedom is also obtained. We show that the kappa-invariant supertwistor coordinates can be obtained by dimensional (D=6 -> D=4) reduction from a D=6 supertwistor. We derive as well by 6 -> 4 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.
dc.descriptionShorter version, to appear in JHEP, with emphasis on the D=6 quaternionic structure
dc.identifierhttps://arxiv.org/abs/0808.2155
dc.identifierhttp://arxiv.org/abs/0808.2155
dc.identifierJHEP 0901:041,2009
dc.identifierdoi:10.1088/1126-6708/2009/01/041
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/217363
dc.subjectHigh Energy Physics - Theory
dc.subjectMathematical Physics
dc.titleSupertwistors, massive superparticles and k-symmetry
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