2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/94232A family of angular momentum coherent states on the sphere is constructed using previous work by Aragone et al [1]. These states depend on a complex parameter which allows an arbitrary squeezing of the angular momentum uncertainties. The time evolution of these states is analyzed assuming a rigid body hamiltonian. The rich scenario of fractional revivals is exhibited with cloning and many interference effects.4 pages, RevTeX,(needs epsfig.sty). Presented on 6th International Conference on Squeezed States and Uncertainty Relations, Napoli, 24-29 May 1999Quantum Physicstext