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QM and STR: The Combining of Quantum Mechanics and Relativity Theory

Published online by Cambridge University Press:  01 April 2022

Storrs McCall*
Affiliation:
McGill University
*
Send requests for reprints to the author, Department of Philosophy, McGill University, 855 Sherbrooke St. West, Montréal, Quebec, Canada H3A 2T7.

Abstract

Combining quantum mechanics with special relativity requires (i) that a spacetime representation of quantum states be found; (ii) that such states, represented as extended along equal-time hyperplanes, be invariant when transformed from one frame to another; and (iii) that collapses of states be instantaneous in every frame. These requirements are met using branching spacetime, in which probabilities of outcomes are represented by the numerical proportions of branches on which the outcomes occur. Quantum states of systems are then identified with the probability values, built into spacetime along spacelike hypersurfaces, of all possible outcomes of all possible tests to which the systems can be subjected.

Type
Philosophy of Physics and Chemistry
Copyright
Copyright © 2000 by the Philosophy of Science Association

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