Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2004-04-19
J. Phys. A. Math. Gen 37, L345 (2004)
Physics
Condensed Matter
Disordered Systems and Neural Networks
7 pages, 2 figures
Scientific paper
10.1088/0305-4470/37/29/L03
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.
Gorin Thomas
Ihra Wolfgang
Mehlig Bernhard
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