Let Ei be a collection of i.i.d. exponential random variables. Bouchaud’s model on ℤ is a Markov chain X(t) whose transition rates are given by wij=νexp(−β((1−a)Ei−aEj)) if i, j are neighbors in ℤ. We study the behavior of two correlation functions: ℙ[X(tw+t)=X(tw)] and ℙ[X(t')=X(tw) ∀ t'∈[tw,tw+t]]. We prove the (sub)aging behavior of these functions when β>1 and a∈[0,1].
Publié le : 2005-05-14
Classification:
Aging,
singular diffusions,
random walk in random environment,
Lévy processes,
60K37,
82C44,
60G18,
60F17
@article{1115137972,
author = {Arous, G\'erard Ben and \v Cern\'y, Ji\v r\'\i },
title = {Bouchaud's model exhibits two different aging regimes in dimension one},
journal = {Ann. Appl. Probab.},
volume = {15},
number = {1A},
year = {2005},
pages = { 1161-1192},
language = {en},
url = {http://dml.mathdoc.fr/item/1115137972}
}
Arous, Gérard Ben; Černý, Jiří. Bouchaud’s model exhibits two different aging regimes in dimension one. Ann. Appl. Probab., Tome 15 (2005) no. 1A, pp. 1161-1192. http://gdmltest.u-ga.fr/item/1115137972/