Authors
David Wallace
University of Pittsburgh
Abstract
What ontology does realism about the quantum state suggest? The main extant view in contemporary philosophy of physics is wave-function realism . We elaborate the sense in which wave-function realism does provide an ontological picture, and defend it from certain objections that have been raised against it. However, there are good reasons to be dissatisfied with wave-function realism, as we go on to elaborate. This motivates the development of an opposing picture: what we call spacetime state realism , a view which takes the states associated to spacetime regions as fundamental. This approach enjoys a number of beneficial features, although, unlike wave-function realism, it involves non-separability at the level of fundamental ontology. We investigate the pros and cons of this non-separability, arguing that it is a quite acceptable feature, even one which proves fruitful in the context of relativistic covariance. A companion paper discusses the prospects for combining a spacetime-based ontology with separability, along lines suggested by Deutsch and Hayden
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Reprint years 2010
DOI 10.1093/bjps/axq010
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References found in this work BETA

Philosophical Papers.David Kellogg Lewis - 1983 - Oxford University Press.
Elementary Quantum Metaphysics.David Albert - 1996 - In J. T. Cushing, Arthur Fine & Sheldon Goldstein (eds.), Bohmian Mechanics and Quantum theory: An Appraisal. Kluwer Academic Publishers. pp. 277-284.

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Citations of this work BETA

Realism About the Wave Function.Eddy Keming Chen - 2019 - Philosophy Compass 14 (7).
Building the World From its Fundamental Constituents.L. A. Paul - 2012 - Philosophical Studies 158 (2):221-256.
Quantum Mechanics in a Time-Asymmetric Universe: On the Nature of the Initial Quantum State.Eddy Keming Chen - 2021 - British Journal for the Philosophy of Science 72 (4):1155–1183.

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