Constants of motion, accessible states, and information theory
- 1 March 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 35 (5) , 2304-2313
- https://doi.org/10.1103/physreva.35.2304
Abstract
Dynamical aspects of the entropy are discussed within the information-theory context. General invariants of the motion are formulated and related both to the entropy and to the number of accessible states. Examples on finite systems (Schottky anomaly, echo spins) are presented. The entropy evolution through nonequilibrium states is also discussed.Keywords
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