| 非谐晶体势能四次方项对晶体比热的贡献 |
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| 引用本文： | 邝安祥,曹万强,石兢.非谐晶体势能四次方项对晶体比热的贡献[J].湖北大学学报(自然科学版),1988(4). |
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| 作者姓名： | 邝安祥 曹万强 石兢 |
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| 作者单位： | 湖北大学物理系
(邝安祥，曹万强)，湖北大学物理系(石兢) |
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| 摘 要： | 本文利用演化算符和Wick定理计算了晶格振动哈密顿算符中非谐振动四次方项的统计平均值,及其对固体比热的贡献。并将此结果与Maradudin等人的结果进行了比较。
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| 关 键 词： | 非简谐四次项 固体比热 演化算符 Wick定理 有限温度松原函数 |
CONTRIBUTION OF THE QUARTIC ANHARMO- NIC TERM IN THE CRYSTAL HAM1LTONIAN TO THE SPECIFIC HEAT OF A CRYSTAL |
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| Kuang Anxiang Cao Wangqiang Shi Jing.CONTRIBUTION OF THE QUARTIC ANHARMO- NIC TERM IN THE CRYSTAL HAM1LTONIAN TO THE SPECIFIC HEAT OF A CRYSTAL[J].Journal of Hubei University(Natural Science Edition),1988(4). |
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| Authors: | Kuang Anxiang Cao Wangqiang Shi Jing |
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| Institution: | Department of Physics |
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| Abstract: | The btahstic average of the guartic anharmonic term in the Crystal Harmiltonian have been caculated by means of the evoluting operator anol Wick's theorem. The Constribution of the quartic anharmonic term to the specific heat of a Crystal have also been studied and compare w. ththe results made by Maradudin. |
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| Keywords: | Quartic Anharmonic Term Specific Heat of a Crystal Evoluting Operator Wick's Theorem Matsubara's Functivn LimitedTemperature |
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