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

摘要

The paper titled "Tripartite entanglement versus tripartite nonlocality in3-qubit GHZ-class states", (Physical Review Letters 102, 250404 (2009)), doesvery important work on studying the nature of Svetlichny Inequalities (whichare Bell-type inequalities) and sheds light on some important properties andrelationship between Svetlichny inequality and tripartite entanglement. Itderives a result for the maximum expectation value of Svetlichny operator forGGHZ and MS states. In this comment, it is put forth that there is probably amistake in the central result derived in the paper.