2011/09/26 by P. Rivière, Paula Riviere, Shahid Iqbal +5
Mathematics · Physics and Astronomy · #Atomic Physics (physics.atom-ph) #Atomic physics #Autocorrelation #Cold Atom Physics and Bose-Einstein Condensates #Computer science #Excitation #FOS: Physical sciences #Laser-Matter Interactions and Applications #Mathematics #Maxima #Network packet #Physics #Quantum #Quantum beats #Quantum mechanics #Spectroscopy and Quantum Chemical Studies #Wave packet #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.1109.5608
10 pages, 8 figures
arxiv created 2011/09/26 · openalex publication_date 2011/09/26 · arxiv updated 2011/09/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
We propose a simple way to determine the periodicities of wave packets in quantum systems directly from the energy differences of the states involved. The resulting classical periods and revival times are more accurate than those obtained with the traditional expansion of the energies about the central quantum number n, especially when n is low. The latter type of wave packet motion occurs upon excitation of highly charged ions with short XUV or X-ray pulses. Moreover, we formulate the wave packet dynamics in such a form that it directly reveals the origin of phase shifts in the maxima of the autocorrelation function. This phenomenon, so far poorly understood since it is not prominent in the high n regime, becomes a dominant feature in low n wave packet dynamics.