Twisted Space-Time Symmetry, Non-Commutativity and Particle Dynamics
  We describe the twisted space-time symmetries which imply the quantum Poincar\'{e} covariance of noncommutative Minkowski spaces, with constant, Lie algebraic and quadratic commutators. Further we present the relativistic and nonrelativistic particle models invariant respectively under twisted relativistic and twisted Galilean symmetries. 
J. Lukierski and M. Woronowicz (Inst. Theor. Phys. Wroclaw University)