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Not all entangled states violate Leggett's crypto-nonlocality

Authors :
Branciard, Cyril
Source :
Phys. Rev. A 88, 042113 (2013)
Publication Year :
2013

Abstract

This note is a reply to M. Navascu\'es' claim that "all entangled states violate Leggett's crypto-nonlocality" [arXiv:1303.5124v2]. I argue that such a conclusion can only be reached if one introduces additional assumptions that further restrict Leggett's notion of "crypto-nonlocality". If a contrario one sticks only to Leggett's original axioms, there exist entangled states whose correlations are always compatible with Leggett's crypto-nonlocality---which is thus a genuinely different concept from quantum separability. I clarify in this note the relation between these two notions, together also with Bell's assumption of local causality.<br />Comment: 3.5 pages. v2: typo corrected. Published version (titled "Bell's local causality, Leggett's crypto-nonlocality and quantum separability are genuinely different concepts") concentrates on clarifying the differences between these 3 notions, rather than on the claims of arXiv:1303.5124v2 (which has since been updated)

Subjects

Subjects :
Quantum Physics

Details

Database :
arXiv
Journal :
Phys. Rev. A 88, 042113 (2013)
Publication Type :
Report
Accession number :
edsarx.1305.4671
Document Type :
Working Paper
Full Text :
https://doi.org/10.1103/PhysRevA.88.042113