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Helvetica Physica Acta 0018-0238/91/050527-21$l.50+0.20/0 Vol. 64 (1991) (c) 1991 Birkhuser Verlag, Basel
 

Summary: Helvetica Physica Acta 0018-0238/91/050527-21$l.50+0.20/0
Vol. 64 (1991) (c) 1991 Birkhäuser Verlag, Basel
On the problem of non-locality in quantum mechanics
D. Aerts and J. Reignier,
Theoretische Natuurkunde,
Vrije Universiteit Brüssel,
Pleinlaan 2, 1050, Brussels.
31. I. 1991, revised 22. IV. 1991)
Abstract : Many experimental results and theoretical reasonings on "gedanken" experiments
suggest that quantum entities behave in a "non-local" way. In order to make the discussion more
precise, we propose an operational definition of "non-locality". We discuss two examples of spin
superposition experiments which illustrate the use of this definition. They show that quantum
entities like a neutron or an atom are non-local. We make an analysis of the difficulty to imagine
such non-local entities and to conciliate this non-locality with the locality of classical entities.
1. Introduction.
From the very beginning of the quantum theory it was clear that the so-called "quantum
world" is very different from our familiar or "classical" world. For a long time however the study
of the quantum properties remained limited to the domain of the stationary states of microscopical
physics and this has certainly greatly contributed to a comfortable attitude of "sleeping on a gentle
pillow" which is still so general among the physicists l\ Recent experiments on spin correlation

  

Source: Aerts, Diederik - Leo Apostel Centre, Vrije Universiteit Brussel

 

Collections: Multidisciplinary Databases and Resources; Physics