Pair fluctuations in ultra-small Fermi systems within self-consistent RPA at finite temperature
作者： A. Storozhenko , P. Schuck , J. Dukelsky , G. Röpke , A. Vdovin
DOI: 10.1016/S0003-4916(03)00095-2
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摘要: Abstract A self-consistent version of the thermal random phase approximation (TSCRPA) is developed within Matsubara Green’s function (GF) formalism. The TSCRPA applied to many level pairing model. normal system considered. results are compared with exact ones calculated for Grand Canonical Ensemble. Advantages over mean field (TMFA) and standard (TRPA) demonstrated. Results correlation functions, excitation energies, single particle densities, etc., as a temperature presented.
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