Journal Article

FZJ-2022-03511

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Classical, Quantum and Event-by-Event Simulation of a Stern–Gerlach Experiment with Neutrons

De Raedt, H. (Corresponding author)FZJ* ; Jin, F.FZJ* ; Michielsen, K.FZJ*

2022
MDPI Basel

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Please use a persistent id in citations: http://hdl.handle.net/2128/31959  doi:10.3390/e24081143

Abstract: We present a comprehensive simulation study of the Newtonian and quantum model of a Stern–Gerlach experiment with cold neutrons. By solving Newton’s equation of motion and the time-dependent Pauli equation for a wide range of uniform magnetic field strengths, we scrutinize the role of the latter for drawing the conclusion that the magnetic moment of the neutron is quantized. We then demonstrate that a marginal modification of the Newtonian model suffices to construct, without invoking any concept of quantum theory, an event-based subquantum model that eliminates the shortcomings of the classical model and yields results that are in qualitative agreement with experiment and quantum theory. In this event-by-event model, the intrinsic angular momentum can take any value on the sphere, yet, for a sufficiently strong uniform magnetic field, the particle beam splits in two, exactly as in experiment and in concert with quantum theory.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)

Appears in the scientific report 2022

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