A theoretical physicist who, with Jonathan Barrett and Terry Rudolph, derived the Pusey-Barrett-Rudolph theorem. A joint measurement on independently prepared systems can exclude outcomes that overlapping underlying-state distributions would require to remain possible. This gives a sharp obstruction to a class of psi-epistemic models, rather than a conclusion free of assumptions about preparation.[ref]
On the reality of the quantum state by Matthew F. Pusey and others. Equations (1)–(5) and generalization in Appendix A
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