Chemical Instabilities and Broken Symmetry: The Hard Mode Case
Chemical instabilities are interesting for the theorist for several reasons. The most important to our purposes are the following. These instabilities occur far out of thermal equilibrium and ordered states may appear through space or time symmetry breaking. In the vicinity of the transition points anomalies in the static and dynamical behaviour of the fluctuations, correlation functions, …, occur. These anomalies are very similar to critical slowing down, divergence of correlation lengths, existence of long range fluctuations, which are well known to play an essential role in the understanding of equilibrium phase transitions. So despite the loss of important properties like detailed balance or fluctuation-dissipation theorems, far from equilibrium chemical instabilities show important similarities with ordinary equilibrium phase transitions [1–3]. Moreover, near the instability the behaviour of the system may be thought to be governed by a few modes only which evolve on long time scales and for these modes detailed balance may be recovered . Great progress has been made these last years in this domain, namely by the use of renormalization group theories to justify scaling properties, universality concepts and to calculate critical indices also by the derivation of exact relations or theorems associated to the breaking of continuous symmetries in the ordered phases [3,7]. As our understanding of the real world lives on analogies, it is then an attractive idea to apply these powerful concepts to get a deeper understanding of non equilibrium phase transitions.
KeywordsVortex Dust Vorticity Librium Isochron
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- 1.G. Nicolis, I. Prigogine: Self-Organization in Non-Equilibrium Systems (Wiley, New York 1977)Google Scholar
- 2.H. Haken: Synergetics, 2ed., Springer Series in Synergetics, Vol.1 (Springer, Berlin, Heidelberg, New York 1978)Google Scholar
- 3.Proceedings of the XVIIth Solvay Conference on Physics: Order and Fluctuations in Equilibrium and Non-Equilibrium Statistical Mechanics (Wiley, New York 1981, ed. by G. Nicolis, G. Dewel, J. TurnerGoogle Scholar
- 6.D. Walgraef, G. Dewel, P. Borckmans: Adv. in Chem. Phys., submittedGoogle Scholar
- 7.S.K. Ma: Modern Theory of Critical Phenomena (Benjamin, New York 1976)Google Scholar
- 10.J.W. Turner: “Stationary and Time Dependent Solutions of Master Equations in Several Variables”, in Dynamics of Synergetics Systems ,ed. by H. Haken (Springer, Berlin, Heidelberg, New York 1980)Google Scholar
- 12.R. Graham: in Fluctuations, Instabilities and Phase Transitions ,ed. by T. Riste (Plenum, New York 1975)Google Scholar
- 15.N.N. Bogolubov: Lectures in Quantum Statistics (Mac Donald, London 1971) Vol.2Google Scholar
- 19.B.I. Halperin: in Physics of Low Dimension Systems ,Proceedings of the Kyoto Summer Institute, ed. by Y. Nagaoka, S. Hikami (Publication Office, Progress in Theoretical Physics, Kyoto 1979)Google Scholar
- 20.D. Nelson: To appear in the Proceedings of the 1980 Summer School on Fundamental Problems in Statistical Mechanics, Enschede, NetherlandsGoogle Scholar
- 25.M.L. Smoes: “Chemical Waves in the Oscillatory Zhabotinskii System. A Transition from Temporal to Spatio-Temporal Organization”, in Dynamics of Synergetic Systems ,ed. by H. Haken (Springer, Berlin, Heidelberg, New York 1980)Google Scholar