The influence theorem for product measures on the discrete space {0,1}N may be extended to probability measures with the property of monotonicity (which is equivalent to “strong positive association”). Corresponding results are valid for probability measures on the cube [0,1]N that are absolutely continuous with respect to Lebesgue measure. These results lead to a sharp-threshold theorem for measures of random-cluster type, and this may be applied to box crossings in the two-dimensional random-cluster model.
@article{1163517221,
author = {Graham, B. T. and Grimmett, G. R.},
title = {Influence and sharp-threshold theorems for monotonic measures},
journal = {Ann. Probab.},
volume = {34},
number = {1},
year = {2006},
pages = { 1726-1745},
language = {en},
url = {http://dml.mathdoc.fr/item/1163517221}
}
Graham, B. T.; Grimmett, G. R. Influence and sharp-threshold theorems for monotonic measures. Ann. Probab., Tome 34 (2006) no. 1, pp. 1726-1745. http://gdmltest.u-ga.fr/item/1163517221/