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

G. Hupin 1, 2 Denis Lacroix 1
1 Théorie
GANIL - Grand Accélérateur National d'Ions Lourds
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.
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Submitted on : Tuesday, August 28, 2012 - 9:08:34 AM
Last modification on : Friday, November 13, 2020 - 10:44:03 AM

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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, American Physical Society, 2012, 86, pp.024309. ⟨10.1103/PhysRevC.86.024309⟩. ⟨in2p3-00725861⟩

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