1.Institut für Theoretische Physik, Universit?t Heidelberg,Heidelberg,Germany;2.Physikalisches Institut, Universit?t Heidelberg,Heidelberg,Germany
Abstract:
We discuss the propagation of hydrogen atoms in static electric and magnetic fields in a longitudinal atomic beam spin echo
(lABSE) apparatus. There the atoms acquire geometric (Berry) phases that exhibit a new manifestation of parity-(P-)violation
in atomic physics. We provide analytical as well as numerical calculations of the behaviour of the metastable 2S states of
hydrogen. The conditions for electromagnetic field configurations that allow for adiabatic evolution of the relevant atomic
states are investigated. Our results provide the theoretical basis for the discussion of possible measurements of P-violating
geometric phases in lABSE experiments.