Long-time-scale revivals in ion traps
  In this contribution we investigate the interaction of a single ion in a trap with laser beams. Our approach, based on unitary transformating the Hamiltonian, allows its exact diagonalization without performing the Lamb-Dicke approximation. We obtain a transformed Jaynes-Cummings type Hamiltonian, and we demonstrate the existence of super-revivals in that system. 
H. Moya-Cessa, A. Vidiella-Barranco, J.A. Roversi, Dagoberto S.   Freitas, and S.M. Dutra (Universidade Estadual de Campinas...