%0 Journal Article %T Should the Wave-Function be a Part of the Quantum Ontological State? %A Drezet A. %J Progress in Physics %D 2012 %I HEXIS (Arizona) %X We analyze the recent no go theorem by Pusey, Barrett and Rudolph (PBR) concerning ontic and epistemic hidden variables. We de ne two fundamental requirements for the validity of the result. We nally compare the models satisfying the theorem with the historical hidden variable approach proposed by de Broglie and Bohm. %K theorem by Pusey %K Barrett and Rudolph %K ontic and epistemic hidden variables %U http://www.ptep-online.com/index_files/2012/PP-31-04.PDF