Self-Consistent Quasi-Particle RPA for the Description of Superfluid Fermi Systems

Details Self-Consistent Quasi-Particle RPA for the Description of Superfluid Fermi Systems Self-Consistent Quasi-Particle RPA for the Description of Superfluid Fermi Systems

2002-08-20

arxiv.org/abs/nucl-th/0208037v2

Phys.Rev. C66 (2002) 064315

Physics

Nuclear Physics

Nuclear Theory

23 pages, 18 figures and 1 table, submitted to Phys. Rev. C

Scientific paper

10.1103/PhysRevC.66.064315

Self-Consistent Quasi-Particle RPA (SCQRPA) is for the first time applied to a more level pairing case. Various filling situations and values for the coupling constant are considered. Very encouraging results in comparison with the exact solution of the model are obtained. The nature of the low lying mode in SCQRPA is identified. The strong reduction of the number fluctuation in SCQRPA vs BCS is pointed out. The transition from superfluidity to the normal fluid case is carefully investigated.

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