Berry phase for a spin 1/2 in a classical fluctuating field
arXiv:quant-ph/0303155 · doi:10.1103/PhysRevLett.91.090404
Abstract
The effect of fluctuations in the classical control parameters on the Berry phase of a spin 1/2 interacting with a adiabatically cyclically varying magnetic field is analyzed. It is explicitly shown that in the adiabatic limit dephasing is due to fluctuations of the dynamical phase.
4 pages, 1 figure, published version