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Feynman path integral formulation of the Bell-Clauser-Horne-Shimony- Holt inequality in quantum field theory

PHYSICAL REVIEW D (2023)

Remarks on the Clauser-Horne-Shimony-Holt inequality in relativistic quantum field theory

G. Peruzzo et al.

Summary: This study investigates the Clauser-Horne-Shimony-Holt (CHSH) inequality within a relativistic quantum field theory model. A set of bounded Hermitian operators is introduced using Weyl operators, and a CHSH-type correlator is constructed and evaluated. Although the violation of the CHSH inequality is small compared to Tsirelson's bound in quantum mechanics, the model can be used to study Bell's inequalities in more physical cases such as the Higgs models.

PHYSICAL REVIEW D (2022)

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Article Physics, Multidisciplinary