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Contour integral method for thermal and quantal fluctuations

K. Kaneko·M. Hasegawa
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Abstract

The partition function by means of the static path approximation (SPA) plus the random-phase approximation (RPA) treatment can be written as a contour integral form without solving the RPA equations for a separable interaction. This method is an efficient way to evaluate numerically the partition function for realistic calculations. As an illustration, we adopt the pairing model at finite temperature.

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K. Kaneko, M. Hasegawa. 2005-11-17. Contour integral method for thermal and quantal fluctuations. https://doi.org/10.1103/physrevc.72.061306

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