Histogram Monte Carlo renormalization-group method for percolation problems.

We present a histogram Monte Carlo method to calculate the existence probability E p , the percolation probability P, and the mean-cluster size S for percolation problems as continuous functions of the bond or site probability p. We then use E p and P in a percolation renormalization-group method to circulate the critical point and exponents. Our method gives quite accurate results for percolation problems