Tuesday, June 26, 2012

1206.5684 (G. S. Paraoanu et al.)

Nonlocal appearance of a macroscopic angular momentum    [PDF]

G. S. Paraoanu, R. Healey
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.
View original: http://arxiv.org/abs/1206.5684

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