PIRSA:08010011

Backward causation models for quantum correlations

APA

Weinstein, S. (2008). Backward causation models for quantum correlations. Perimeter Institute. https://pirsa.org/08010011

MLA

Weinstein, Steve. Backward causation models for quantum correlations. Perimeter Institute, Jan. 15, 2008, https://pirsa.org/08010011

BibTex

          @misc{ pirsa_08010011,
            doi = {10.48660/08010011},
            url = {https://pirsa.org/08010011},
            author = {Weinstein, Steve},
            keywords = {Quantum Foundations},
            language = {en},
            title = {Backward causation models for quantum correlations},
            publisher = {Perimeter Institute},
            year = {2008},
            month = {jan},
            note = {PIRSA:08010011 see, \url{https://pirsa.org}}
          }
          

Steve Weinstein University of Waterloo

Abstract

Bell\\\'s theorem is commonly understood to show that EPR correlations are not explainable via a local hidden variable theory. But Bell\\\'s theorem assumes that the initial state of the particles is independent of the final detector settings. It has been proposed that this independence assumption might be undermined by a relativistically-allowed form of \\\"backward causation\\\", thereby allowing construction of a local hidden-variable model after all. In this talk, I will show that there is no backward causation model which yields the desired correlations. However, there are other physical scenarios yielding nontrivial nonlocal correlations which violated Bell\\\'s independence assumption. I will present two.