= Pusey–Barrett–Rudolph theorem
{wiki=Pusey–Barrett–Rudolph_theorem}
The Pusey–Barrett–Rudolph (PBR) theorem is a result in quantum mechanics that addresses the interpretation of quantum states and their relationship to physical reality. Proposed by Matthew Pusey, Jonathan Barrett, and Nicolas Rudolph in 2012, the theorem argues against certain interpretations of quantum mechanics, particularly those that claim that quantum states merely represent knowledge about an underlying reality rather than representing a physical reality itself.
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