AGING EFFECTS OF AN ELASTIC STRING DIFFUSING IN A DISORDERED MEDIA

The aging effects of a ''diffusing glass,'' a single elastic string di ffusing in a two-dimensional disordered media assisted by thermal nois e, are studied by Monte Carlo simulations. We find for the first time convincing numerical evidence of nontrivial aging effects both in the linear response against transverse force and the associated correlatio n function. Our results retain some important predictions of the conve ntional dynamical mean-field theory but also reveal remarkable differe nces from it.