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 Local quantum mechanics and superquantum correlations imply superluminal signaling


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It has been shown that local quantum measurements and no-signaling imply quantum correlations Barnum et al. Phys. Rev. Lett., 104, 140401 2010. This entails that superquantum correlations will be superluminaly signaling if we admit the validity of local quantum mechanics. We present a specific, simple instance of this situation. Our result also has the interpretation that replacing the local trivial dynamics in a generalized non-signaling theory GNST by one that admits local unitaries, results in a probability distribution that may be positive and normalization-preserving but violates no-signaling, and is thus inconsistent within the formalism.



Autor: S. Aravinda; R. Srikanth

Fuente: https://archive.org/



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