Approach to projection operator formalis
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G. Sauermann; K.-P. Karmann
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Article
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1983
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Elsevier Science
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English
β 218 KB
It is pointed out that first-and second-order dynamic susceptibilities for one observable can be expressed by a matrix resolvent in Liouville space~ In this way projection operator formalism is possible. The simplest choice of a projector is discussed, leading to generalized memory functions for the