Comment on “A local realist model for correlations of the singlet state” by K. De Raedt, K. Keimpema, H. De Raedt, K. Michielsen and S. Miyashita
Institute for History and Foundations of Science, Utrecht University, P.O Box 80.000, 3508 TA Utrecht, The Netherlands
2 Matematiska Institutionen, Linköpings Universitet, SE-581 83 Linköping, Sweden
Published online: 28 July 2007
De Raedt et al. [Eur. Phys. J. B 53, 139 (2006)] have claimed to provide a local realist model for correlations of the singlet state in the familiar Einstein-Podolsky-Rosen-Bohm (EPRB) experiment when time-coincidence is used to decide which detection events should count in the analysis, and furthermore that this suggests that it is possible to construct local realistic models that can reproduce the quantum mechanical expectation values. In this letter we show that these conclusions cannot be upheld since their model exploits the so-called coincidence-time loophole. When this is properly taken into account no startling conclusions can be drawn about local realist modelling of quantum mechanics.
PACS: 03.65.Ud – Entanglement and quantum nonlocality / 03.65.Ta – Foundations of quantum mechanics
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2007