Mode Coupling Approach for spin-facilitated kinetic Ising models

Details Mode Coupling Approach for spin-facilitated kinetic Ising models Mode Coupling Approach for spin-facilitated kinetic Ising models

2000-04-26

arxiv.org/abs/cond-mat/0004445v2

Physics

Condensed Matter

Statistical Mechanics

Written in REVTex, 18 pages, 7 figures in Postscript

Scientific paper

10.1063/1.1383053

The d-dimensional n-spin facilitated kinetic Ising model is studied analytically starting from usual master equations and their transformation into a Fock-space representation. The evolution of relevant operators is rewritten in terms of a projection formalism. The obtained frequency matrices and memory terms are analyzed. Especially, the influences of the memory terms is approached by using standard techniques of the usual mode coupling approach. The temperature dependence of the relaxation times related to the n-spin facilitated kinetic Ising model shows a weak non-Arrhenius behavior. Furthermore, a characteristic stretched decay of the correlation function is obtained.

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