We calculate the Berry phase of a spin-1/2 particle in a magnetic field considering the quantum nature of the field. The phase reduces to the standard Berry phase in the semiclassical limit and the eigenstate of the particle acquires a phase in the vacuum. We also show how to generate a vacuum induced Berry phase considering two quantized modes of the field which has an interesting physical interpretation
FuentesGuridi, I., Carollo, A., Bose, S., Vedral, V. (2002). Vacuum induced spin-1/2 Berry's phase. PHYSICAL REVIEW LETTERS, 89(22), 220404-1-220404-4 [10.1103/PhysRevLett.89.220404].
Vacuum induced spin-1/2 Berry's phase
Carollo, Angelo;
2002-01-01
Abstract
We calculate the Berry phase of a spin-1/2 particle in a magnetic field considering the quantum nature of the field. The phase reduces to the standard Berry phase in the semiclassical limit and the eigenstate of the particle acquires a phase in the vacuum. We also show how to generate a vacuum induced Berry phase considering two quantized modes of the field which has an interesting physical interpretation
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