A system’s wave function is uniquely determined by its underlying physical state

Roger Andrew Colbeck, Renato Renner

Research output: Contribution to journalArticlepeer-review


Weaddress the question of whether the quantum-mechanical wave function of a system is uniquely determined by any complete descriptionof the systems physical state.Weshow that this is the case if the latter satisfies a notion of free choice. This notion requires that certain experimental parameters-those that according to quantum theory can be chosen independently of other variables -retain this property in the presence of. An implication of this result is that, among all possible descriptionsof a systems state compatible with free choice, the wave function Y is as objective as.

Original languageEnglish
Article number013016
Number of pages12
JournalNew Journal of Physics
Issue number1
Publication statusPublished - 13 Jan 2017

Bibliographical note

© 2017, The Author(s).


  • foundations of quantum theory
  • meaning of the wave function
  • non-locality

Cite this