The semiclassical density - matrix theory with carrier intraband relaxation broading is des - cribed.

本文简明地描述了由载流子带内弛豫加宽的半经典的密度矩阵理论.

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Consider the density matrix of a harmonic oscillator at finite temperature.

考虑有限温度下的简振子的密度矩阵.

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The fourth chapter gives the concrete numerical calculation method of surface Green's function and density matrix.

第4章给出了具体的表面格林函数和密度矩阵的数值计算方法.

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