Quantum manifestation of Levy-type flights in a chaotic system
  Semi--classical dynamics of quantum wave packets spreading is studied for a kicked rotor. Quantum flights are established for a specific, "magic" value of a chaos control parameter when the classical stickiness of trajectories is most effective. By studying of survival probability and distribution of the accelerations we identify the presence of quantum Levy-type flights. 
A. Iomin (Technion) and G.M. Zaslavsky (NYU)