Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Fundamental link between system theory and statistical mechanics

Journal Article · · Found. Phys.; (United States)
DOI:https://doi.org/10.1007/BF00734321· OSTI ID:5267390
A fundamental link between system theory and statistical mechanics has been found to be established by the Kolmogorov entropy. By this quantity the temporal evolution of dynamical systems can be classified into regular, chaotic, and stochastic processes. Since K represents a measure for the internal information creation rate of dynamical systems, it provides an approach to irreversibility. The formal relationship to statistical mechanics is derived by means of an operator formalism originally introduced by Prigogine. For a Liouville operator L and an information operator M tilde acting on a distribution in phase space, it is shown that i(L, M tilde) = KI (I = identity operator). As a first consequence of this equivalence, a relation is obtained between the chaotic correlation time of a system and Prigogine's concept of a finite duration of presence. Finally, the existence of chaos in quantum systems is discussed with respect to the existence of a quantum mechanical time operator.
Research Organization:
Max-Planck-Institut fuer Physik und Astrophysik (Germany, F.R.)
OSTI ID:
5267390
Journal Information:
Found. Phys.; (United States), Journal Name: Found. Phys.; (United States) Vol. 17:9; ISSN FNDPA
Country of Publication:
United States
Language:
English