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Nonadiabatic Geometric Phase in Composite Systems and Its Subsystem |
| LI Xin |
| Faculty of Science, Kunming University of Science and Technology, Kunming 650093 |
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LI Xin 2008 Chin. Phys. Lett. 25 3852-3855 |
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Abstract We point out that the time-dependent gauge transformation technique may be effective in investigating the nonadiabatic geometric phase of a subsystem in a composite system. As an example, we consider two uniaxially coupled spin -1/2 particles with one of particles driven by rotating magnetic field. The influences of coupling and precession frequency of the magnetic field on geometric phase are also discussed in detail.
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03.65.Vf
03.67.-w
03.67.-a
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Received: 08 August 2008
Published: 25 October 2008
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