Quantum theory predicts the existence of so-called tripartite-entangled states, in which three quantum particles are related in a way that has no counterpart in classical physics. Theoretical physicists would like to understand how well new theories, alternatives to quantum theory, might be able to reproduce the behavior of these states.
Click here for original story, Study proves a generalization of Bell’s theorem: Quantum correlations are genuinely tripartite and nonlocal
Source: Phys.org