= Leggett inequality
{wiki=Leggett_inequality}
The Leggett inequality is a type of inequality derived within the context of quantum mechanics and quantum information theory. It serves as a test for distinguishing between classical and quantum correlations, particularly in the context of the interpretation of quantum mechanics and the nature of reality. Proposed by the physicist Andrew Leggett in the context of his work on hidden variable theories, the inequality provides a mathematical framework to assess the predictions of quantum mechanics against those of classical physics.
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