Berry phase for a spin 1/2 in a classical fluctuating field

Gabriele De Chiara; G. Massimo Palma

doi:10.1103/physrevlett.91.090404

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Berry phase for a spin 1/2 in a classical fluctuating field

Gabriele De Chiara·G. Massimo Palma

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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.

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Gabriele De Chiara, G. Massimo Palma. 2004-02-29. Berry phase for a spin 1/2 in a classical fluctuating field. https://doi.org/10.1103/physrevlett.91.090404

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