Chinese Physics

Berry phase of coupled two arbitrary spins in a time-varying magnetic field

许长谭, 贺明明, Chen Gang

Published May 1, 2006• 4 citations

Abstract

In this paper, we investigate the Berry phase of two coupled arbitrary spins driven by a time-varying magnetic field where the Hamiltonian is explicitly time-dependent. Using a technique of time-dependent gauge transform the Berry phase and time-evolution operator are found explicitly in the adiabatic approximation. The general solutions for arbitrary spins are applied to the spin-1/2 system as an example of explanation.

DOI: 10.1088/1009-1963/15/5/006

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