Comment on “Self-organized criticality and absorbing states: Lessons from the Ising model”

According to Pruessner and Peters [G. Pruessner and O. Peters, Phys. Rev. E 73, 025106(R) (2006)], the finite-size scaling exponents of the order parameter in sandpile models depend on the tuning of driving and dissipation rates with system size. We point out that the same is not true for avalanches in the slow driving limit.

Figure 1

(Color online) Scaling plots of the avalanche-size distributions from the two-dimensional Manna model with bulk dissipation. The inset presents the collapse in the case $\kappa =1$, while in the main figure the case $\kappa =3$ is shown. Both collapses correspond to the value ${\tau }_s=1.28$.