Nonlocal Appearance of a Macroscopic Angular Momentum

G. S. Paraoanu; R. Healey

doi:10.1007/s10773-011-1056-8

Nonlocal Appearance of a Macroscopic Angular Momentum

G. S. Paraoanu, R. Healey

Department of Applied Physics

Research output: Contribution to journal › Article › Scientific › peer-review

Abstract

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 language	English
Pages (from-to)	1783-1791
Number of pages	9
Journal	International Journal of Theoretical Physics
Volume	51
Issue number	6
DOIs	https://doi.org/10.1007/s10773-011-1056-8
Publication status	Published - Jun 2012
MoE publication type	A1 Journal article-refereed

Keywords

Bose-Einstein condensate
Nonlocality
Quantum measurement

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10.1007/s10773-011-1056-8

Cite this

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AB - 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.

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Nonlocal Appearance of a Macroscopic Angular Momentum

Abstract

Keywords

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