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

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

2005-06-06

arxiv.org/abs/cond-mat/0506139v1

Phys. Rev. E 72, 028103 (2005)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevE.72.028103

We have repeated the simulations of Henkel, Paessens and Pleimling (HPP) [Phys.Rev.E {\bf 69}, 056109 (2004)] for the field-cooled susceptibility $\chi_{FC}(t) - \chi_0 \sim t^{-A}$ 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

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