Superrevivals in the quantum dynamics of a particle confined in a finite square-well potential

We examine the revival features in wave-packet dynamics of a particle confi ned in a finite square-well potential. The possibility of tunneling modifie s the revival pattern as compared to an infinite square-well potential. We study the dependence of the revival times on the depth of the square well a nd predict the existence of superrevivals. The nature of these superrevival s is compared with similar features seen in the dynamics of wave packets in an anharmonic-oscillator potential. [S1050-2947(99)06302-7].