2004/04/19 by T. Gorin, B. Mehlig, W. Ihra · 1 citation
Physics and Astronomy · #Advanced Chemical Physics Studies #Quantum chaos and dynamical systems #Spectroscopy and Quantum Chemical Studies #cond-mat.dis-nn
paper · pdf · doi:10.1088/0305-4470/37/29/l03
published as J. Phys. A. Math. Gen 37, L345 (2004) · 7 pages, 2 figures
arxiv created 2004/04/19 · openalex publication_date 2004/07/08 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
The decay of photoexcited quantum systems (examples are photodissociation of molecules and autoionization of atoms) can be viewed as a half-collision process (an incoming photon excites the system which subsequently decays by dissociation or autoionization). For this reason, the standard statistical approach to quantum scattering, originally developed to describe nuclear compound reactions, is not directly applicable. Using an alternative approach, correlations and fluctuations of observables characterizing this process were first derived in [Fyodorov YV and Alhassid Y 1998 Phys. Rev. A 58, R3375]. Here we show how the results cited above, and more recent results incorporating direct decay processes, can be obtained from the standard statistical scattering approach by introducing one additional channel.