This problem describes BCS pairing. It is very convenient to construct the mean field theory using the functional integral representation.

此问题描述BCS配对。利用泛函积分表象来建立平均场理论是十分方便的。

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BCS theory is modified by random matrices theory, and a new approach is obtained to treat superconductivity in small metallic grains.

用无规矩阵理论对BCS理论进行修正，得到一种处理金属小粒子超导电性的新方法。

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The conventional BCS theory is generalized using random matrices theory, and a new approach is obtained to explain superconductivity in small metallic grains.

本文对常规的BCS理论用无规矩阵理论进行了推广，得到一种研究金属小粒子超导电性的新方法。

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