| Berry phase of coupled two arbitrary spins in a time-varying magnetic field |
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| 作者姓名： | 许长谭 贺明明 陈刚 |
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| 作者单位： | Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China;Institute of Condensed Matter Physics, Linyi Normal University,Linyi 276005, China;Department of Physics, Qufu Normal University, Qufu 273165, China;Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China;Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China |
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| 基金项目： | Project supported by the National Natural Science Foundation of China (Grant No 10475053). |
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| 摘 要： |
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| 关 键 词： | Berry相 时滞测量转化 任意自旋 磁场 |
| 收稿时间： | 2005-10-23 |
| 修稿时间： | 2005-10-232006-03-20 |
Berry phase of coupled two arbitrary spins in a time-varying magnetic field |
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| Xu Chang-Tan,He Ming-Ming and Chen Gang.Berry phase of coupled two arbitrary spins in a time-varying magnetic field[J].Chinese Physics B,2006,15(5):912-914. |
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| Authors: | Xu Chang-Tan He Ming-Ming and Chen Gang |
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| Institution: | Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China; Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China;Institute of Condensed Matter Physics, Linyi Normal University,Linyi 276005, China;Department of Physics, Qufu Normal University, Qufu 273165, China |
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| 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. |
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| Keywords: | Berry phase time-dependent gauge transformation coupled two
arbitrary spins |
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