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    Twisted conformal algebra related to κ-Minkowski space

    Stjepan Meljanac1,*, Anna Pachoł2,†, and Danijel Pikutić1,‡

    • 1Rudjer Bošković Institute, Bijenička c.54, HR-10002 Zagreb, Croatia
    • 2Dipartimento di Matematica “Giuseppe Peano”, Universita degli Studi di Torino, Via Carlo Alberto, 10–10123 Torino, Italy

    • *meljanac@irb.hr
    • apachol@unito.it
    • dpikutic@irb.hr

    Phys. Rev. D 92, 105015 – Published 9 November, 2015

    DOI: https://doi.org/10.1103/PhysRevD.92.105015

    Abstract

    Twisted deformations of the conformal symmetry in the Hopf algebraic framework are constructed. The first one is obtained by a Jordanian twist built up from dilatation and momenta generators. The second is the lightlike κ-deformation of the Poincaré algebra extended to the conformal algebra, obtained by a twist corresponding to the extended Jordanian r-matrix. The κ-Minkowski spacetime is covariant quantum space under both of these deformations. The extension of the conformal algebra by the noncommutative coordinates is presented in two cases. The differential realizations for κ-Minkowski coordinates, as well as their left-right dual counterparts, are also included.

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