1112.0951 (Marcin Wieśniak et al.)

Maximally Tight Bell Inequalities Involving Lower Order Correlations    [PDF]

Marcin Wieśniak, Mohamed Nawareg, Marek Żukowski

Most of known multipartite Bell inequalities are for correlation functions for all subsystems. We propose a method of derivation of tight Bell inequalities involving also correlations of lower order. An example of a N-qubit state, which violates such inequalities despite vanishing N-qubit correlations is given. We show how to derive a necessary condition for a state to violate such inequalities.

View original: http://arxiv.org/abs/1112.0951