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A comment on "Tripartite entanglement versus tripartite nonlocality in 3-qubit GHZ-class states"

Quantum Physics 2014-08-14 v1

Abstract

The paper titled "Tripartite entanglement versus tripartite nonlocality in 3-qubit GHZ-class states", (Physical Review Letters 102, 250404 (2009)), does very important work on studying the nature of Svetlichny Inequalities (which are Bell-type inequalities) and sheds light on some important properties and relationship between Svetlichny inequality and tripartite entanglement. It derives a result for the maximum expectation value of Svetlichny operator for GGHZ and MS states. In this comment, it is put forth that there is probably a mistake in the central result derived in the paper.

Keywords

Cite

@article{arxiv.1408.3073,
  title  = {A comment on "Tripartite entanglement versus tripartite nonlocality in 3-qubit GHZ-class states"},
  author = {Vibhu Gupta},
  journal= {arXiv preprint arXiv:1408.3073},
  year   = {2014}
}

Comments

2 pages