Communications in Theoretical PhysicsBerry Phases for the L-S Coupled System in a Time-Dependent Magnetic FieldYan Feng-Li, Yang Lin-GuangPublished May 15, 2001• 4 citationsPublisherAbstractBy the unitary transformation method, the instantaneous energy eigenstates of the L-S coupled system in a time-dependent magnetic field, hence the Berry phases, are calculated.DOI10.1088/0253-6102/35/5/527