Reentrance during nonequilibrium relaxation
Abstract
We consider nonequilibrium critical dynamics of the two-dimensional Ising model for which the initial state is prepared by switching on random fields with zero mean and variance . In the initial state there is no magnetic order but the clusters of parallel spins have a percolation transition for small enough . Using heath-bath dynamics we measure the relaxation of the magnetization which shows a reentrance in time. Due to cluster dissolution in the early time regime there is a decrease of the magnetization, followed by an increase due to nonequilibrium domain growth which itself turns to a decrease due to equilibrium relaxation. The power law decay of the nonequilibrium autocorrelation function is not influenced by the percolation in the initial state.
Keywords
Cite
@article{arxiv.cond-mat/0509372,
title = {Reentrance during nonequilibrium relaxation},
author = {Laszlo Kornyei and Michel Pleimling and Ferenc Igloi},
journal= {arXiv preprint arXiv:cond-mat/0509372},
year = {2015}
}
Comments
7 pages, 4 figues, submitted to Europhysics Letters