| 量子隧道态-声子耦合系统的变分法研究 |
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| 引用本文： | 石云龙,聂一行,陈鸿,吴翔. 量子隧道态-声子耦合系统的变分法研究[J]. 物理学报, 1992, 41(9): 1499-1503 |
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| 作者姓名： | 石云龙 聂一行 陈鸿 吴翔 |
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| 作者单位： | (1)同济大学物理系,上海200092; (2)雁北师范学院物理系,大同037000 |
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| 摘 要： | 本文采用变分法研究了量子隧道态-声子耦合系统的基态能量。发现:系统的基态可以用位移态及位移-压缩态这两种变分态描述,且随着耦合强度的增加,稳定的基态将由位移态向位移-压缩态转变。本文给出这种转变的相图。关键词：
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| 关 键 词： | 量子隧道态 声子 耦合 变分法 |
| 收稿时间： | 1991-09-28 |
VARIATIONAL STUDY FOR A COUPLED SYSTEM OF A QUANTUM TUNNELING STATE WITH PHONONS |
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| SHI YUN-LONG,NIE YI-HANG,CHEN HONG and WU XIANG. VARIATIONAL STUDY FOR A COUPLED SYSTEM OF A QUANTUM TUNNELING STATE WITH PHONONS[J]. Acta Physica Sinica, 1992, 41(9): 1499-1503 |
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| Authors: | SHI YUN-LONG NIE YI-HANG CHEN HONG WU XIANG |
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| Abstract: | The ground state energy of a coupled system of a quantum tunneling state with phonons is investegated by a variational approach. We find that the ground state of the system may be described by two variation states-displaced state and displaced-squeezed state, and the transition of the stable ground state from displaced state to displaced-squeezed state will occur as coupling strength increases. The phase diagram of the transition is also given. |
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