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Journal Articles Physical Review C Year : 2012

Number-conserving approach to the pairing problem: Application to Kr and Sn isotopic chains

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G. Hupin
Denis Lacroix

Abstract

The recently proposed symmetry-conserving energy density functional approach [G. Hupin, D. Lacroix, and M. Bender, Phys. Rev. C 84, 014309 (2011)] is applied to perform variation after projection onto the good particle number using the Skyrme interaction, including density-dependent terms. We propose a simplification to reduce the numerical effort to perform the variation. We present a systematic study of the Kr and Sn isotopic chains. This approach leads to nonzero pairing in magic nuclei and a global enhancement of the pairing gap compared to the original theory, which breaks particle number symmetry.

Dates and versions

in2p3-00725861 , version 1 (28-08-2012)

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G. Hupin, Denis Lacroix. Number-conserving approach to the pairing problem: Application to Kr and Sn isotopic chains. Physical Review C, 2012, 86, pp.024309. ⟨10.1103/PhysRevC.86.024309⟩. ⟨in2p3-00725861⟩
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