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.
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.
LI Xin. Nonadiabatic Geometric Phase in Composite Systems and Its Subsystem[J]. 中国物理快报, 2008, 25(11): 3852-3855.
LI Xin. Nonadiabatic Geometric Phase in Composite Systems and Its Subsystem. Chin. Phys. Lett., 2008, 25(11): 3852-3855.
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2008, Vol. 25 
