Matthew F. Pusey Created 2026-10-24 Updated 2026-11-05
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 Created 2026-10-24 Updated 2026-11-05
Nature Physics 8, 475–478; arXiv v3, 18 November 2012. Equations (1)–(5) specify the exclusion argument and composition assumptions; Appendices A–B generalize it and treat errors.