Critical fluctuations in the one-dimensional Bak-Sneppen model

The critical fluctuation properties of fitness distribution in the one-dimensional Bak-Sneppen model are studied in terms of the normalized factorial moments, erraticity moments and the factorial correlators. For a fitness window below the gap intermittent behaviors are observed. The scaling exponent for the BS model is different from that in two dimensional Ising model for second order phase transition. There is no correlation between fluctuations in two windows separated by the critical gap.