Comment on "Scaling of the linear response in simple aging systems without disorder"

Corberi, Federico; Lippiello, Eugenio; Zannetti, Marco

Comment on "Scaling of the linear response in simple aging systems without disorder"

Authors

Corberi, Federico

Lippiello, Eugenio

Zannetti, Marco

Description

We have repeated the simulations of Henkel, Paessens and Pleimling (HPP) [Phys.Rev.E {\bf 69}, 056109 (2004)] for the field-cooled susceptibility $χ_{FC}(t) - χ_0 \sim t^{-A}$ in the quench of ferromagnetic systems to and below $T_C$. We show that, contrary to the statement made by HPP, the exponent $A$ coincides with the exponent $a$ of the linear response function $R(t,s) \sim s^{-(1+a)}f_R(t/s)$. We point out what are the assumptions in the argument of HPP that lead them to the conclusion $A<a$.
4 pages, 4 figures