paper

Bicrossproduct structure of -Poincare group and non-commutative geometry

arXiv:hep-th/9405107 · doi:10.1016/0370-2693(94)90699-8

Abstract

We show that the -deformed Poincaré quantum algebra proposed for elementary particle physics has the structure of a Hopf agebra bicrossproduct $U(so(1,3))\cobicross T$. The algebra is a semidirect product of the classical Lorentz group acting in a deformed way on the momentum sector . The novel feature is that the coalgebra is also semidirect, with a backreaction of the momentum sector on the Lorentz rotations. Using this, we show that the -Poincaré acts covariantly on a -Minkowski space, which we introduce. It turns out necessarily to be deformed and non-commutative. We also connect this algebra with a previous approach to Planck scale physics.

12 pages. Revision: minor typos corrected

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