标题： 超小费米系统在有限温度下自洽 RPA 中的对涨落 显示英文标题

标题： Pair Fluctuations in Ultra-small Fermi Systems within Self-Consistent RPA at Finite Temperature

摘要： 一种自洽的热随机相位近似（TSCRPA）版本在Matsubara格林函数（GF）形式主义中被发展出来。 TSCRPA被应用于多能级配对模型。 考虑了系统的正常相。 将TSCRPA的结果与为巨正则系综计算出的精确结果进行了比较。 展示了TSCRPA相对于热平均场近似（TMFA）和标准热随机相位近似（TRPA）的优势。 给出了关联函数、激发能、单粒子能级密度等随温度变化的结果。 显示英文摘要

摘要： A self-consistent version of the Thermal Random Phase Approximation (TSCRPA) is developed within the Matsubara Green's Function (GF) formalism. The TSCRPA is applied to the many level pairing model. The normal phase of the system is considered. The TSCRPA results are compared with the exact ones calculated for the Grand Canonical Ensemble. Advantages of the TSCRPA over the Thermal Mean Field Approximation (TMFA) and the standard Thermal Random Phase Approximation (TRPA) are demonstrated. Results for correlation functions, excitation energies, single particle level densities, etc., as a function of temperature are presented.