Comment on "Fluctuation-dissipation relations in the nonequilibrium critical dynamics of Ising models"

Abstract

Recently Mayer et al. [Phys. Rev. E {\bf 68}, 016116 (2003)] proposed a new way to compute numerically the fluctuation-dissipation ratios in nonequilibrium critical systems. Using well-known facts of nonequilibrium critical dynamics I show that the leading contributions of the quantities they consider are in fact one-time quantities which are independent of the waiting time. The ratio of these one-time quantities determines the slope of the straight lines observed in the fluctuation-dissipation plots of Mayer et al.

arXiv comment4 pages, 3 figures included, shortened version

References in corpus (5)

• Nonequilibrium critical dynamics of ferromagnetic spin systems
• Universality and Scaling in Short-time Critical Dynamics
• Fluctuation-dissipation relations in the non-equilibrium critical dynamics of Ising models
• Two-loop Critical Fluctuation-Dissipation Ratio for the Relaxational Dynamics of the O(N) Landau-Ginzburg Hamiltonian
• Dynamical Relaxation and Universal Short-Time Behavior in Finite Systems: The Renormalization Group Approach

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• Ageing in the critical contact process: a Monte Carlo study
• Reply to Comment on "Fluctuation-dissipation relations in the non-equilibrium critical dynamics of Ising models"
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