| 非平衡统计场论与临界动力学(Ⅱ)——拉氏场论表述 |
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| 引用本文： | 周光召,郝柏林,于渌.非平衡统计场论与临界动力学(Ⅱ)——拉氏场论表述[J].物理学报,1980,29(8):969-977. |
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| 作者姓名： | 周光召 郝柏林 于渌 |
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| 作者单位： | 中国科学院理论物理研究所 |
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| 摘 要： | 本文从闭路格林函数生成泛函的连续积分表示出发,对傅氏变换取单圈近似,求得序参量的有效作用量。在闭路连续积分中取涨落二级近似,得到临界动力学的拉氏场论表述。文中指出改进现有理论的可能途径。
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| 收稿时间： | 1979-09-17 |
NONEQUILIBRIUM STATISTICAL FIELD THEORY AND CRITICAL DYNAMICS (Ⅱ)——LAGRANGIAN FIELD THEORY FORMULATION |
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| ZHOU GUANG-ZHAO,HAO BAI-LIN and YU LU.NONEQUILIBRIUM STATISTICAL FIELD THEORY AND CRITICAL DYNAMICS (Ⅱ)——LAGRANGIAN FIELD THEORY FORMULATION[J].Acta Physica Sinica,1980,29(8):969-977. |
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| Authors: | ZHOU GUANG-ZHAO HAO BAI-LIN and YU LU |
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| Abstract: | The expression of the effective action for the order parameters is derived from the continuous integral representation for the generating functional on the closed time path in the one loop approximation for the Fourier transforms. The Lagrangian formulation of the critical dynamics is recovered in the second order approximation of fluctuations in the closed time path continuous integral. The various possibilities of improving the existing theory of critical dynamics are considered. |
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