Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2007-11-09
J. Stat. Mech. (2008) P02013
Physics
Condensed Matter
Statistical Mechanics
25 pages, 4 figures
Scientific paper
10.1088/1742-5468/2008/02/P02013
Motivated by recent numerical findings [M. Henkel, T. Enss, and M. Pleimling, J. Phys. A: Math. Gen. 39 (2006) L589] we re-examine via Monte Carlo simulations the linear response function of the two-dimensional Ising model with Glauber dynamics quenched to the critical point. At variance with the results of Henkel et al., we detect discrepancies between the actual scaling behavior of the response function and the prediction of Local Scale Invariance. Such differences are clearly visible in the impulse autoresponse function, whereas they are drastically reduced in integrated response functions. Accordingly, the scaling form predicted on the basis of Local Scale Invariance simply provides an accurate fitting form for some quantities but cannot be considered to be exact.
Corberi Federico
Gambassi Andrea
Lippiello Eugenio
Zannetti Marco
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