Thomas H. Baum, Carl E. Larson, et al.
Journal of Organometallic Chemistry
Paper
Nonlinear coupling and relaxation of fluctuations and the central peak
Abstract
A simple model Hamiltonian for a structural phase transition is discussed. It is shown that using the modecular field approximation one obtains a nonlinear coupling of the order parameter and entropy fluctuations. This results in a central peak in the order parameter fluctuation spectrum. The width of the central peak is proportional to the entropy relaxation rate. © 1973.
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