Foundations of Physics

, Volume 37, Issue 7, pp 1069–1073 | Cite as

Non-locality and Gauge Freedom in Deutsch and Hayden’s Formulation of Quantum Mechanics

  • David Wallace
  • Christopher G. Timpson

Deutsch and Hayden have proposed an alternative formulation of quantum mechanics which is completely local. We argue that their proposal must be understood as having a form of ‘gauge freedom’ according to which mathematically distinct states are physically equivalent. Once this gauge freedom is taken into account, their formulation is no longer local.


nonlocality gauge dependence Deutsch–Hayden representation 




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  5. In QFT, this is a consequence of the requirement that spacelike separated observables must commute.Google Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Balliol CollegeUniversity of OxfordOxfordUK
  2. 2.Division of History and Philosophy of Science, Department of PhilosophyUniversity of LeedsLeedsUK

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