Abstract
The well known analogy between the classical distribution function and the quantum mechanical density operator is extended to the cases of joint and conditional probability-distributions. Thus one is led to a generalized definition of correlation and response-functions in quantum systems. The generalization becomes essential if irreversible dynamical laws such as the Wangsness-Bloch equation are considered.
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Die bekannte lineare Nachwirkungstheorie eines Systems mit reversibler Dynamik4 lÄ\t sich also ohne Schwierigkeiten auf den Fall einer irreversiblen Dynamik übertragen.
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Bausch, R., Stahl, A. Korrelations- und Nachwirkungsfunktionen in Quantensystemen mit irreversibler Dynamik. Z. Physik 194, 436–447 (1966). https://doi.org/10.1007/BF01326355
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DOI: https://doi.org/10.1007/BF01326355