K. Malarz et Am. Vidales, UNIVERSAL RATIO-CHI IN 2-DIMENSIONAL SQUARE RANDOM-SITE PERCOLATION, International journal of modern physics C, 9(1), 1998, pp. 147-155
The percolation phenomena on two-dimensional square lattice is conside
red. The quotient chi of connectivity length xi(>) above percolation t
hreshold p(c) and xi(<) below p, at the same small distance np is disc
ussed. The results of two different algorithms and programs and agreem
ent with theoretical/mathematical predications is presented, in contra
st to previous contradictory Monte Carlo simulation results.