Abstract: We study the resonance phenomena for time periodic perturbations
of a Hamiltonian $H$ on the Hilbert space $L^2(\mathbb{R}^d)$. Here,
resonances are characterized in terms of time behavior of the survival probability. Our
approach uses the Floquet-Howland formalism combined with the results of L. Cattaneo, J.M. Graf and W.
Hunziker on resonances for time independent perturbations.
This is a joint work with Claudio Fernandez from Pontificia Universidad de
Chile-Santiago.
