| 采用 SYMANZIK 改进作用量的 SU(2)格点规范理论的变分累积展开研究 |
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| 引用本文： | 李红,陈天仑,王庆,卢强.采用 SYMANZIK 改进作用量的 SU(2)格点规范理论的变分累积展开研究[J].南开大学学报,2000,33(3):35-40. |
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| 作者姓名： | 李红 陈天仑 王庆 卢强 |
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| 作者单位： | 南开大学物理系!天津，300071，南开大学物理系!天津，300071，南开大学物理系!天津，300071，南开大学物理系!天津，300071 |
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| 基金项目： | Supported by National Natural Science Foundation of China ( 1 97750 2 4 ) and Doctoral Foundation of Chinese Education Commissio |
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| 摘 要： | 应用变分积展开方法，将具有Ｓｙｍａｎｚｉｋ改进作用量的ＳＵ（２）格点规范模型的内能和比热展开到第三级。变分参数由主变分方法确定，交将计算结果与蒙特卡罗和标准Ｗｉｌｏｓｎ模型的结果进行了对比，证明ＶＣＥ方法可给出与蒙特卡罗方法一致的结果。
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| 关 键 词： | 格点规范理论 改进作用量 变分累积展开 |
VARIATIONAL CUMULANT EXPANSION STUDY OF SU(2) LATTICE GAUGE THEORY WITH SYMANZIK'S IMPROVED ACTION |
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| Li Hong,Chen Tianlun,Wang Qing,Lu Qiang.VARIATIONAL CUMULANT EXPANSION STUDY OF SU(2) LATTICE GAUGE THEORY WITH SYMANZIK'S IMPROVED ACTION[J].Acta Scientiarum Naturalium University Nankaiensis,2000,33(3):35-40. |
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| Authors: | Li Hong Chen Tianlun Wang Qing Lu Qiang |
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| Abstract: | With the variational cumulant expansion method, the internal energy and the specific heat of the SU (2) lattice gauge theory with Symanzik's improved action are calculated up to the third order. The variational parameter is determined by the main valued method and the results are compared with the Monte Carlo results as well as the results for the standard Wilson action. It is shown that the VCE method can give a consistent result with that of Monte Carlo Method. |
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| Keywords: | lattice gauge theory improved action variational cumulant expansion |
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