Yu-Chun Wu, Marek Żukowski, Guang-Can Guo
We find a structural feature of Clauser-Horne-Shimony-Holt (CHSH) type Bell inequalities which relates CHSH-type Bell inequalities for different number of observers. With the structural feature one can in principle derive all kinds of CHSH type Bell inequalities step by step, increasing the number of observers. As an application, we propose a method to construct experimentally friendly CHSH-type Bell inequalities for multipartite cases. For example an eight-party inequality involving just four terms can be used to show a violation of local realism for an eight-party GHZ state generated by Huang [Nat. Commun. {\bf 2}:546 (2011)].
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http://arxiv.org/abs/1302.6698
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