6533b836fe1ef96bd12a15c7

RESEARCH PRODUCT

Vacuum induced spin-1/2 Berry's phase.

Vlatko VedralAngelo CarolloI. Fuentes-guridiSownak Bose

subject

PhysicsQuantum PhysicsCondensed matter physicsField (physics)Phase (waves)General Physics and AstronomySemiclassical physicsFOS: Physical sciencesVacuum Geometric phaseNonlinear Sciences::Chaotic DynamicsQuantization (physics)Geometric phaseQuantum mechanicsQuantum theoryBerry connection and curvatureQuantum field theorySpin (physics)Quantum Physics (quant-ph)

description

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 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 a interesting physical interpretation.

10.1103/physrevlett.89.220404http://ora.ox.ac.uk/objects/uuid:3b89a30a-ebe5-4454-beb0-241e473ac817