## Abstract

We consider the formulation and quantization of the N = 3 superparticle model, both with and without central charge. Without the central charge the action possesses U (3) invariance and therefore is naturally quantized in the N = 3 harmonic superspace. The quantization reproduces the N = 3 supergauge strength multiplets, described by analytic N = 3 superfields and a gravitino multiplet as a constrained N = 3 chiral superfield. When the central charge is present, it breaks the U (3) R-symmetry of N = 3 superalgebra down to SU (2) × U (1), and the corresponding superparticle model is formulated in the N = 2 harmonic superspace extended by a pair of extra Grassmann variables. The quantization of such a model leads to the massive BPS N = 3 vector multiplet. It is shown that upon additional superfield constraints such multiplet reduces to the massive N = 2 vector multiplet.

Original language | English |
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Pages (from-to) | 180-207 |

Number of pages | 28 |

Journal | Nuclear Physics B |

Volume | 802 |

Issue number | 1-2 |

DOIs | |

Publication status | Published - 11 Oct 2008 |

## ASJC Scopus subject areas

- Nuclear and High Energy Physics