Nonlocal Appearance of a Macroscopic Angular Momentum

G. S. Paraoanu, Richard A Healey

Research output: Contribution to journalArticle

1 Scopus citations


We discuss a type of measurement in which a macroscopically large angular momentum (spin) is "created" nonlocally by the measurement of just a few atoms from a double Fock state. This procedure apparently leads to a blatant nonconservation of a macroscopic variable-the local angular momentum. We argue that while this gedankenexperiment provides a striking illustration of several counter-intuitive features of quantum mechanics, it does not imply a non-local violation of the conservation of angular momentum.

Original languageEnglish (US)
Pages (from-to)1783-1791
Number of pages9
JournalInternational Journal of Theoretical Physics
Issue number6
Publication statusPublished - Jun 2012



  • Bose-Einstein condensate
  • Nonlocality
  • Quantum measurement

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Mathematics(all)

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