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Bell's inequality for a single spin 1/2 particle and quantum contextuality

Sayandeb Basu·Somshubhro Bandyopadhyay·Guruprasad Kar·Dipankar Home
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Abstract

We argue that for a \emph{single particle} Bell's inequality is a consequence of noncontextuality and is \emph{incompatible} with statistical predictions of quantum mechanics. Thus noncontextual models can be empirically falsified, \emph{independent} of locality condition. For this an appropriate entanglement between \emph{disjoint} Hilbert spaces pertaining to translational and spin degrees of freedom of a single spin-1/2 particle is invoked

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Sayandeb Basu, Somshubhro Bandyopadhyay, Guruprasad Kar, Dipankar Home. 1999-07-08. Bell's inequality for a single spin 1/2 particle and quantum contextuality. https://doi.org/10.1016/s0375-9601(00)00747-7

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