| 一种研究非旋波近似演化问题的系统近似方法 |
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| 引用本文： | 张正阶,汪克林,秦敢.一种研究非旋波近似演化问题的系统近似方法[J].中国物理 B,2005,14(7):1317-1322. |
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| 作者姓名： | 张正阶 汪克林 秦敢 |
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| 作者单位： | College of Information Engineering, Chengdu University of Technology, Chengdu 610059, China;Center of Nonlinear Science, Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026}, China;Center of Nonlinear Science, Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026}, China |
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| 摘 要： | 以一个与玻色场耦合的二能级粒子为例，证实了在静态极化子问题的研究中取得成功的相干态近似方法，同样也能够有效地用于非旋波近似下量子系统的时间演化问题。结果同时表明，在一般情况下，哈密顿算符中的非旋波项不能被忽略；并提供了在频率空间进一步检测非旋波项效应的可能性。
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| 关 键 词： | 相干态近似方法 非旋波项 Jaynes-Cummings模型 |
| 收稿时间： | 2004-11-18 |
A systematic approximate method for the study of evolution problem beyond rotating wave approximation |
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| Zhang Zheng-Jie,Wang Ke-Lin and Qin Gan.A systematic approximate method for the study of evolution problem beyond rotating wave approximation[J].Chinese Physics B,2005,14(7):1317-1322. |
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| Authors: | Zhang Zheng-Jie Wang Ke-Lin and Qin Gan |
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| Institution: | Center of Nonlinear Science, Department of Astronomy and Applied Physics, University of Science and Technology of China, Hefei 230026}, China; College of Information Engineering, Chengdu University of Technology, Chengdu 610059, China |
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| Abstract: | By a model of a two-level particle coupled with boson field, we made it clear that an evolution problem can be solved beyond the rotating wave approximation. We have applied the coherent approximation method, which had been proved to be effective in dealing with stationary state problems of polaron, to the evolution problem of the system mentioned above. The results obtained showed that the coherent approximation method is effective to treat the evolution problem, and, in general cases, the non-rotating wave terms in Hamiltonian should not be ignored. Our results may provide a deep physical insight for further experiments to test the effects of non-rotating wave terms. |
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| Keywords: | coherent approximation method non-rotating wave terms Jaynes--Cummings model |
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