Superfluid nuclear matter calculations

Details Superfluid nuclear matter calculations Superfluid nuclear matter calculations

1999-02-06

arxiv.org/abs/nucl-th/9902019v2

Nucl.Phys. A657 (1999) 187-215

Physics

Nuclear Physics

Nuclear Theory

correted version, appendix on numerical methods added

Scientific paper

10.1016/S0375-9474(99)00325-5

We present a method to calculate nuclear matter properties in the superfluid phase. The method is based on the use of self-consistent off-shell nucleon propagators in the T-matrix equation. Such a complete treatment of the spectral function, is required below and around $T_c$ due to a pseudogap formation in the spectral function. In the superfluid phase we introduce the anomalous self-energy in the fermion propagators and in the T-matrix equation, consistently with the strong coupling BCS equations. The equations for the nucleon spectral function include both a contribution of condensed and scattering pairs. The method is illustrated by numerical calculations. Above $T_c$ pseudogap formation is visible in the spectral function and below $T_c$ a superfluid gap also appears.

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