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The Quantum Mechanical Frame of Reference

Soltau, Andrew (2010) The Quantum Mechanical Frame of Reference. UNSPECIFIED.

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    Abstract

    Everett demonstrates the appearance of collapse, within the context of the unitary linear dynamics. However, he does not state clearly how observers are to have determinate measurement records, hence 50 years of debate. This, however, is inherent. He defines the observer as the record of observations, which, naturally, is the record of correlations established with the physical environment. As in Rovelli's Relational Quantum Mechanics, the correlations record is the sole determinant of the effective physical environment, here the quantum mechanical frame of reference: due to multiple realisation of the functional identity of the observer, the physical environment is a simultaneity of all the physical environments in which it is instantiated, a 'universe superposition', in which only the environment correlated with the observer by observations is determinate. This effects a discrete and idiosyncratic physical environment for each version of an observer, in which determinate measurement records are recorded. Quantum mechanics is on this view fully relational, demonstrated as not only viable but necessary by Rovelli & Laudisa. The quantum mechanical frame of reference is Everett's 'Relative State', and on Tegmark's 'inside view', the time evolution follows the standard von Neumann-Dirac formulation. Thus observers get precisely the measurement records predicted by the standard formulation, but since objectively there is only the appearance of collapse, there is neither a measurement problem nor a disparity with relativity. The linear dynamics and the collapse dynamics are directly experienced, as the passage of time and the making of observations, respectively.


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    Item Type: Other
    Keywords: Quantum mechanics, Everett, Relational quantum mechanics, Philosophy of physics, Measurement problem, Wave-packet collapse, Functional frame of reference, Relativity, Inertial frame of reference
    Subjects: Specific Sciences > Physics > Quantum Mechanics
    Depositing User: Andrew Soltau
    Date Deposited: 13 Sep 2010
    Last Modified: 07 Oct 2010 11:20
    Item ID: 5544
    URI: http://philsci-archive.pitt.edu/id/eprint/5544

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