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IQSE AMO/QO SEMINAR SERIES


"Angular Momentum Coupling in Arbitrarily Oriented Magnetic Fields"


Dr. Michael Brieger
DLR Stuttgart, German Aerospace Center

ABSTRACT 

The result of the Stern-Gerlach experiment is interpreted as the fact that a spin can only point either "up" or "down" in a magnetic field. This view follows the doctrine that only stationary states represent physical reality. Focussing on the dynamically least probable situations it misses the dynamic wealth related to nonstationary states. The application of Schroedinger's time-dependent equation to closed systems reveals that so-called "general" expectation values always behave classically. In the special case presented here, the motion of the total magnetic moment of two spins ℏ/2 can even be described in space and time, and the anomalous Zeeman effect turns out to be just a magnetomechanical effect of balanced internal and external torques.


November 6, 2018
IQSE 578, 3 PM
Mitchell Physics Building


Institute for Quantum Science and Engineering
Texas A&M University

Coffee and cookies will be served 15 minutes prior start time