Effect of thermal noise and initial conditions in the dynamics of a mean-field ferromagnet
- 1 January 1988
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 49 (10) , 1663-1671
- https://doi.org/10.1051/jphys:0198800490100166300
Abstract
For a mean field ferromagnet, we calculate as a function of temperature the probability that two configurations submitted to the same thermal noise fall into opposite valleys. For a system of N spins, we show that the time for two configurations to meet increases like log N when the two configurations belong to the same valley and exponentially with N when the two configurations belong to different valleys. The slope of this exponential growth gives a measure of the barrier heightKeywords
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