CHSH inequality

noun

An inequality used in the proof of Bell's theorem: |S|≤2,, where S=E(a,b)-E(a,b')+E(a',b)+E(a',b').

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Meanings

nounCHSH inequality (plural CHSH inequalities)

plural CHSH inequalities

  1. natural sciencesAn inequality used in the proof of Bell's theorem: |S|≤2,, where S=E(a,b)-E(a,b')+E(a',b)+E(a',b').

Origin

Named after John Clauser, Michael Horne, Abner Shimony, and Richard Holt, who described it in a much-cited paper published in 1969.

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Cite this entry
APA

CHSH inequality. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/CHSH%20inequality

MLA

“CHSH inequality.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/CHSH%20inequality. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “CHSH inequality,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/CHSH%20inequality.

Source: CHSH inequality on Wiktionary, CC BY-SA 4.0.