| 一维非线性链自由能的计算 |
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| 引用本文： | 李伟,林圣路.一维非线性链自由能的计算[J].山东师范大学学报(自然科学版),1994,9(3):28-32. |
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| 作者姓名： | 李伟 林圣路 |
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| 作者单位： | 山东师范大学物理学系 |
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| 摘 要： | 研究了一维非线性链孤立子的统计性质．引进平移模作为完备基，把系统作为无相互作用的孤立子（反孤立于）一声子组成的“理想气体”，采用巨正则系综计算了低温条件下系统的自由能密度．
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| 关 键 词： | 非线性链 孤立子 平移模 声子 自由能 统计 |
THE CALCULATION OF FREE ENERGY FOR NONLINEAR ONE-DIMENSIONAL CHAIN |
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| Li Wei,Lin Shenglu.THE CALCULATION OF FREE ENERGY FOR NONLINEAR ONE-DIMENSIONAL CHAIN[J].Journal of Shandong Normal University(Natural Science),1994,9(3):28-32. |
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| Authors: | Li Wei Lin Shenglu |
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| Abstract: | We have studied statistical properties of solitons for nonlinear one-dimensional chain.By in-treducing the translation medes which provide a complete set of functions ,we transform this system into anideal gas that consists of solitons(antisolitions)and phonons,and use grand canonical ensembIe to calculatethe free energy density at low temperature approximation. |
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| Keywords: | nonlinear one- dimensional chain soliton(antisolitinitions) translation modes phonon |
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