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Wigner's Friend and Bell's Field Beables

Barrett, Jeffrey A. (2011) Wigner's Friend and Bell's Field Beables. [Preprint]

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    A field-theoretic version of Wigner's friend (1961) illustrates how the quantum measurement problem arises for field theory. Similarly, considering space like separate measurements of entangled fields by observers akin to Wigner's friend shows the sense in which relativistic constraints make the measurement problem particularly difficult to resolve in the context of a relativistic field theory. We will consider proposals by Wigner (1961), Bloch (1967), Helwig and Kraus (1970), and Bell (1984) for resolving the measurement problem for quantum field theory. We will conclude by considering the possibility of giving up rich dynamical explanation in the context of a many-maps formulation of relativistic quantum field theory.

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    Item Type: Preprint
    Additional Information: I wrote this paper when I was thinking about the measurement problem and field theories. Part of this paper is related to a talk I gave at Stanford in 2008.
    Keywords: Wigner, quantum measurement problem, field theory, relativity
    Subjects: Specific Sciences > Computation/Information > Quantum
    Specific Sciences > Physics > Quantum Field Theory
    Specific Sciences > Physics > Quantum Mechanics
    Depositing User: Jeffrey Barrett
    Date Deposited: 22 Dec 2011 08:03
    Last Modified: 22 Dec 2011 08:03
    Item ID: 8969

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