| 一维量子Sine-Gordon模型隧道效应的理论研究 |
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| 引用本文： | 徐靖,陈鸿,章豫梅. 一维量子Sine-Gordon模型隧道效应的理论研究[J]. 同济大学学报(自然科学版), 2000, 28(5): 560-563 |
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| 作者姓名： | 徐靖 陈鸿 章豫梅 |
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| 作者单位： | 同济大学 物理系，上海 200092 |
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| 基金项目： | 国家自然科学基金资助项目(19725416) |
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| 摘 要： | 用高斯波泛涵变分理论研究了一维量子Ｓｉｎｅ－Ｇｏｒｄｏｎ模型的隧道效应，发现系统长度为有限时，隧道效应改变系统的低温性质，系统长度为无限时，隧道效应不改变系统的低温性质。
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| 关 键 词： | 高斯波泛函数 隧道效应 S－G模型 凝聚态物理 |
| 文章编号： | 0253-374X(2000)05-0506-04 |
| 修稿时间： | 1999-11-01 |
Theoretical Study of Tunneling Effect in One - dimensional Quantum Sine- Gordon Model |
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| XU Jing,CHEN Hong,ZHANG Yu-mei. Theoretical Study of Tunneling Effect in One - dimensional Quantum Sine- Gordon Model[J]. Journal of Tongji University(Natural Science), 2000, 28(5): 560-563 |
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| Authors: | XU Jing CHEN Hong ZHANG Yu-mei |
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| Abstract: | The tunneling effect in one-dimensional quantum Sine-Gordon model is studied by variational Gaussian wave functional method. It is shown that the tunneling effect will disappear when one-dimensional Sine-Gordon model's length tends towards infinity. The tunneling effect only plays its role in one-dimensional quantum Sine-Gordon system with finite length. |
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| Keywords: | variational Gaussian wave functional method tunneling effect Sine-Gordon model |
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