M. Zukowski et D. Kaszlikowski, CRITICAL VISIBILITY FOR N-PARTICLE GREENBERGER-HORNE-ZEILINGER CORRELATIONS TO VIOLATE LOCAL REALISM, Physical review. A, 56(3), 1997, pp. 1682-1685
A sequence of Bell inequalities for N-particle systems, which involve
three settings of each of the local measuring apparatuses, is derived.
For Greenberger-Horne-Zellinger states, quantum mechanics violates th
ese inequalities by factors exponentially growing with N. The threshol
d visibilities of the multiparticle sinusoidal interference fringes, f
or which local realistic theories are ruled out, decrease as (2/3)(N).