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Entropy Decrease during Excitation of Sustained Oscillations
Author(s) -
EngelHerbert H.,
Schumann M.
Publication year - 1987
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19874990602
Subject(s) - excitation , non equilibrium thermodynamics , physics , entropy (arrow of time) , phase transition , atomic physics , statistical physics , condensed matter physics , quantum mechanics
The behaviour of the entropy is studied during a nonequilibrium phase transition. It is shown that for the generation of sustained oscillations the entropy decreases monotonously if the average oscillator energy remains fixed. This result is valid both for hard and soft excitation of oscillations.