Aging in Models of Non-linear Diffusion
Condensed Matter
2009-10-28 v1
Abstract
We show that for a family of problems described by non-linear diffusion equations an exact calculation of the two time correlation function gives C(t,t')=f(t-t')g(t'), t>t', exhibiting normal and anomalous diffusions, as well as aging effects, depending on the degree of non-linearity. We discuss also the form in which FDT is violated in this class of systems. Finally we argue that in this type of models aging may be consequence of the non conservation of the "total mass".
Keywords
Cite
@article{arxiv.cond-mat/9612082,
title = {Aging in Models of Non-linear Diffusion},
author = {Daniel A. Stariolo},
journal= {arXiv preprint arXiv:cond-mat/9612082},
year = {2009}
}
Comments
4 pages, 1 figure, to appear in Phys.Rev.E