The European Physical Journal A

, Volume 37, Issue 1, pp 81–86 | Cite as

A stabilized pairing functional

Regular Article — Theoretical Physics

Abstract

We propose a modified pairing functional for nuclear-structure calculations which avoids the abrupt phase transition between pairing and non-pairing states. The intended application is the description of nuclear collective motion where the smoothing of the transition is compulsory to remove singularities. The stabilized pairing functional allows a thoroughly variational formulation, unlike the Lipkin-Nogami (LN) scheme which is often used for the purpose of smoothing. First applications to nuclear ground states and collective excitations prove the reliability and efficiency of the proposed stabilized pairing.

PACS

21.10.Dr Binding energies and masses 21.10.Re Collective levels 21.60.-n Nuclear structure models and methods 74.20.Fg BCS theory and its development 

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  1. 1.Institut für Theoretische PhysikUniversität ErlangenErlangenGermany

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