Samuel A. Werner, Physics Laboratory, NIST Gaithersburg, Maryland

Topic: "Observation of Aharonov-Bohm Effects by Neutron Interferometry"  (Video)

ABSTRACT:  The special and unique techniques of neutron interferometry have been used to observe a number of topological and geometrical effects. These include the phase shift of a particle carrying a magnetic moment (a neutron) encircling a line charge (the Aharonov-Casher effect), and the Scalar Aharonov-Bohm effect, observed with a pulsed magnetic field solenoid and time-of-flight neutron detection. On the occasion of the 50th anniversary of the Aharonov-Bohm paper, I provide an overview of the neutron interferometry technique and a description of these two historic experiments.