Killing tensors and canonical geometry
  The systematic derivation of constants of the motion, based on Killing tensors and the gauge covariant approach, is outlined. Quantum dots are shown to support second-, third- and fourth-rank Killing tensors. 
M. Cariglia, G. W.Gibbons, J.-W. van Holten, P. A. Horvathy, P.   Kosinski, P.-M. Zhang
hep-th math-ph math.MP