量子多体理论课程论文:BCS 理论推出 GL model (How to get GL model from BCS theory)

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本节我们证明了可以用 BCS 理论,用路径积分方法和微扰论方法微扰到低阶项可得到自由能的 |△(⃗r )|4 即四阶修正,通过变分得到 GL 方程,而后我们给出了超导系统磁屏蔽长度等 GL 特征参量的表达式。后续略微初步讨论了带杂质情况的修正

Author(s): 魏贤昊
Year: 2022

Language: Chinese