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VOLUME 61 (1995) | ISSUE 4 | PAGE 241
Spinor (super-) particle with a commuting index spinor
An action is proposed for a spinor particle whose configuration space is parametrized by a commuting Weyl spinor along with the vector of space-time coordinates. After quantization, the model describes a massive (massless) particle with a fixed, finite, and otherwise arbitrary spin (helicity). The spinor coordinate plays the role of an index spinor. In the supersymmetric case, the Fermi constraints of massless and massive superparticles with central charges can easily be separated by kind through the use of covariant and irreducible methods. © 1995 American Institute of Physics.