Causality in Qbism

          @misc{ scivideos_PIRSA:19120033,
            doi = {10.48660/19120033},
            url = {https://pirsa.org/19120033},
            author = {Pienaar, Jacques},
            keywords = {Quantum Foundations, Quantum Gravity, Quantum Information},
            language = {en},
            title = {Causality in Qbism},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {dec},
            note = {PIRSA:19120033 see, \url{https://scivideos.org/pirsa/19120033}}
          }
          

Abstract

The approach to quantum theory known as QBism notoriously asserts that the quantum state is not even a partial representation of reality, but instead quantifies an agent's subjective degrees of belief about future experiences. Despite its counter-intuitive premise, QBists argue that this interpretation has the potential to illuminate and demystify certain aspects of quantum theory. In this talk I will discuss how `causality' might be interpreted by a QBist, and whether doing so might help us understand the bizarre hypothetical phenomenon of `indefinite causality'.