Review article

A Statistical Description of Molecular Dynamical Processes in Liquids. Application to FIR Absorption Spectroscopy

C. A. Chatzidimitriou-Dreismann ; Iwan-N. Stranski - Institut fur Physikalische und Theoretische Chemie der Technischen Universitat Berlin, Strasse des 17. Juni 112, D-1000 Berlin (West) 12, Germany
Ernst Lippert ; Iwan-N. Stranski - Institut fur Physikalische und Theoretische Chemie der Technischen Universitat Berlin, Strasse des 17. Juni 112, D-1000 Berlin (West) 12, Germany

Abstract

The basic physical concepts concerning the derivation and
validity of the generalized fluctuation-dissipation theorem (FDT)
as revealed in an earlier paper11 are discussed. It is shown that
dissipation of irradiation within the framework of Kubo's linear
response theory is mainly due (i) to the short-time behavior of the
coupling operator of a system with the irradiation field, (ii) to the
spontaneous fluctuations concerning the statistical operator in the
microscopic time scale, and (iii) to the explicit introduction of the
coupling of the systems with the thermal bath in Kubo's formalism,
as proposed by van Vliet.
As a result, the statistical operator becomes time dependent
in the shorttime range. Within Kubo's microscopic theory of irreversible
processes the generalized FDT also delivers a microscopic
interpretation of Prigogine's theorem of minimum entropy production
(TMEP).

Keywords

Hrčak ID:

194274

URI

https://hrcak.srce.hr/194274

Publication date:

1.7.1982.

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