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How to be a Quantum Realist

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If you have a question about this talk, please contact Rebecca Bowler.

The strangeness of quantum theory largely lies in the fact that there is no picture of reality arising from the theory. The Hilbert space formalism, which is 80 years old now, almost inevitably comes with an instrumentalist interpretation (unless one is willing to accept many worlds with their strange ontology). All statements involve measurements, observers, probabilities—we learn nothing about a quantum system `in itself’. In this talk, I will sketch some aspects of the so-called topos approach to quantum theory, which aims to give a new mathematical formulation of quantum theory, including a new form of quantum logic, and allows for a realist interpretation.

There would be a wine reception after the talk with the guest speaker.

Free for members, £2 for non-members.

This talk is part of the Cambridge University Physics Society series.

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