Wave packet dynamics and photofragmentation in time-dependent quadratic potentials

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Abstract
We study the dynamics of generalized harmonic oscillator states in time‐dependent quadratic potentials and derive analytical expressions for the momentum space and the Wigner phase space representation of these wave packets. Using these results we consider a model for the rotational excitation of a diatomic fragment produced in the photofragmentation of a triatomic molecule and we highlight the signatures of classical mechanics in the final product distribution of this process.