Universal1/fNoise from Dissipative Self-Organized Criticality Models

We introduce a model able to reproduce the main features of $1/f$ noise: hyperuniversality (the power-law exponents are independent on the dimension of the system; we show here results in $d=1,2\mathrm{}$) and apparent lack of a low-frequency cutoff in the power spectrum. Essential ingredients of this model are an activation-deactivation process and dissipation.