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Niels Bohr on the wave function and the classical/quantum divide

Zinkernagel, Henrik (2016) Niels Bohr on the wave function and the classical/quantum divide. [Published Article]

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    It is well known that Niels Bohr insisted on the necessity of classical concepts in the account of quantum phenomena. But there is little consensus concerning his reasons, and what he exactly meant by this. In this paper, I re-examine Bohr’s interpretation of quantum mechanics, and argue that the necessity of the classical can be seen as part of his response to the measurement problem. More generally, I attempt to clarify Bohr’s view on the classical/quantum divide, arguing that the relation between the two theories is that of mutual dependence. An important element in this clarification consists in distinguishing Bohr’s idea of the wave function as symbolic from both a purely epistemic and an ontological interpretation. Together with new evidence concerning Bohr’s conception of the wave function collapse, this sets his interpretation apart from both standard versions of the Copenhagen interpretation, and from some of the reconstructions of his view found in the literature. I conclude with a few remarks on how Bohr’s ideas make much sense also when modern developments in quantum gravity and early universe cosmology are taken into account.

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    Item Type: Published Article
    Keywords: Measurement problem; Wave function collapse; Copenhagen Interpretation
    Subjects: Specific Sciences > Physics > Quantum Mechanics
    Depositing User: Henrik Zinkernagel
    Date Deposited: 01 Mar 2016 15:42
    Last Modified: 01 Mar 2016 15:42
    Item ID: 11942
    Journal or Publication Title: Studies in History and Philosophy of Modern Physics
    Publisher: Elsevier
    Official URL:
    DOI or Unique Handle.: 10.1016/j.shpsb.2015.11.001

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