This problem describes BCS pairing. It is very convenient to construct the mean field theory using the functional integralrepresentation.
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。
2
This paper discusses the integralrepresentation of a class of self-adjoint operators. By applying such representation, it is proved that the spectrums of such operators are discrete.
本文研究一类自伴算子的积分形式，利用这种形式证明这类自伴算子的谱集是离散的，然后推出几个性质。
3
In Kirchhoff migration, this is done by using the Kirchhoff integralrepresentation of a field at a given point as a (weighted) superposition of waves propagating from adjacent points and times.