Mori′s memory kernel equation in equilibrium quantum systems in finite volumes

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Abstract

For any observable in an equilibrium quantum system in a finite volume, we show a method of deriving Mori′s memory kernel equation, which consists of three components, Mori′s frequency, memory function, and fluctuation, i.e., we give a concrete mathematical expression for the three components in terms of an autocorrelation function of the observable.

Original languageEnglish
Pages (from-to)354-383
Number of pages30
JournalAnnals of Physics
Volume229
Issue number2
DOIs
Publication statusPublished - Feb 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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