NUMBER CONSERVING APPROACH IN QUASIPARTICLE REPRESENTATION-Reference-Cited by-同舟云学术

NUMBER CONSERVING APPROACH IN QUASIPARTICLE REPRESENTATION

Published:2003-02 Issue:01 Volume:12 Page:109-123
ISSN:0218-3013
Container-title:International Journal of Modern Physics E
language:en
Short-container-title:Int. J. Mod. Phys. E

Author:

OUDIH M. R.¹,FELLAH M.¹²,ALLAL N. H.¹²

Affiliation:

1. Centre de Recherche Nucléaire d'Alger, 2 Bd. Frantz Fanon, BP. 399 Alger-Gare, Algiers, Algeria

2. Laboratoire de Physique Théorique, Faculté de Physique, USTHB BP 32, El Alia, 16111 Bab Ezzouar, Algiers, Algeria

Abstract

An exact number conserving approach is formulated in the quasiparticle representation to show the effect of the particle-number projection on the ground and the first 0+ excited states. It is applied to the two-level pairing model, which allows an exact solution and a comparison to other approaches. The present method has proved to be an advantageous alternative as compared to the BCS and to the usual methods used to restore the particle number symmetry.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218301303001193

Reference27 articles.

1. Conservation of Particle Number in the Nuclear Pairing Model

2. Improved Superconductivity Approximation for the Pairing Interaction in Nuclei

3. A note on the pairing interaction in nuclei

4. Study of approximations in the nuclear pairing-force problem

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