Effect of thermal noise and initial conditions in the dynamics of a mean-field ferromagnet
نویسندگان
چکیده
2014 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 height. J. Phys. France 49 (1988) 1663-1671 OCTOBRE 1988, Classification Physics Abstracts 05.20 05.40
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