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Bell nonlocality and Bayesian game theory

2012/10/03 by Nicolas Brunner, Noah Linden · 1 citation
Physics and Astronomy · #quant-ph

paper · pdf · doi:10.1038/ncomms3057

published as Nature Communications 4, 2057 (2013) · 7 pages, 3 figures

arxiv created 2012/10/03 · arxiv updated 2013/07/10

Abstract

We discuss a connection between Bell nonlocality and Bayesian games. This link offers interesting perspectives for Bayesian games, namely to allow the players to receive advice in the form of nonlocal correlations, for instance using entangled quantum particles or more general no-signaling boxes. The possibility of having such 'nonlocal advice' will lead to novel joint strategies, impossible to achieve in the classical setting. This implies that quantum resources, or more general no-signaling resources, offer a genuine advantage over classical ones. Moreover, some of these strategies can represent equilibrium points, leading to the notion of quantum/no-signaling Nash equilibrium. Finally we describe new types of question in the study of nonlocality, namely the consideration of non-local advantage when there is a set of Bell expressions.

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