Berry Phase for Systems with Angular Momenta in Electric and Magnetic Fields

Details Berry Phase for Systems with Angular Momenta in Electric and Magnetic Fields Berry Phase for Systems with Angular Momenta in Electric and Magnetic Fields

2011-04-28

arxiv.org/abs/1104.5299v1

Physics

Quantum Physics

11 pages

Scientific paper

The Berry phase for a variety of systems comprising of two angular momenta is discussed. These include the electron and proton in the ground state of the hydrogen atom (taking into account the hyperfine interaction), the positronium atom, the spin and orbital angular momenta of a single electron, muon capture by the deuteron in an external magnetic field, etc. Though the time scales involved, the underlying intrinsic Hamiltonians are quite different, as also the possible experimental probes, the geometric nature of the results for the Berry phase due to a time varying externally imposed magnetic field is found to be quite robust. Some indications are also put forward as to the possible interesting studies with time varying electric fields. The objective of this work is an attempt to broaden the scope of such studies in both the experimental and theoretical directions.

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