Linear and non linear response in the aging regime of the 1D trap model
arXiv:cond-mat/0303582 · doi:10.1103/PhysRevE.67.065105
Abstract
We investigate the behaviour of the response function in the one dimensional trap model using scaling arguments that we confirm by numerical simulations. We study the average position of the random walk at time tw+t given that a small bias h is applied at time tw. Several scaling regimes are found, depending on the relative values of t, tw and h. Comparison with the diffusive motion in the absence of bias allows us to show that the fluctuation dissipation relation is, in this case, valid even in the aging regime.
5 pages, 3 figures, 3 references added
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