Does the Aharonov-Bohm effect occur?
Wednesday, 23 Apr. 2014, 14:00 - 15:30
Presenter: Mario Bunge - Emeritus Professor, McGill University, Montreal
Host: C. Brukner
Where: Ernst-Mach-HS, 2nd floor, Boltzmanngasse 5, 1090 Wien
Abstract: Aharonov and Bohm (1959) showed that, far from being merely a mathematical tool, the vector potential A can have a microphysical effect even when irrotational, in which case the magnetic field is null. Still, at first sight there is something weird about this situation. Do we have to admit a new force? I argue that there is no paradox in the potentials-formulation of electrodynamics, for it shows that, while “curl A = 0” represents a vanishing magnetic field, A alters the motion of charged matter dragged by the electric field. And a semantic analysis of the potentials formulation of electrodynamics shows from the start that this theory refers to e.m. fields.
in cooperation with BCSSS – Bertalanffy Center for the Study of Systems Science