Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory

LIU Lang; ZHAO Peng-Wei

doi:10.1088/1674-1137/38/7/074103

Chinese Physics C> 2014, Vol. 38> Issue(7) : 074103 DOI: 10.1088/1674-1137/38/7/074103

Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory

LIU Lang ^, ,
ZHAO Peng-Wei ^,

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Abstract：
The effects of pairing correlation in Yb isotopes are investigated by covariant density functional theory with pairing correlations and blocking effects treated exactly by a shell model like approach (SLAP). Experimental one- and two-neutron separation energies are reproduced quite well. The traditional BCS calculations always give larger pairing energies than those given by SLAP calculations, particularly for the nuclei near the proton and neutron drip lines. This may be caused because many of the single particle orbits above the Fermi surface are involved in the BCS calculations, but many of them are excluded in the SLAP calculations.

References

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LIU Lang and ZHAO Peng-Wei. Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory[J]. Chinese Physics C, 2014, 38(7): 074103. doi: 10.1088/1674-1137/38/7/074103

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Received: 2013-09-22
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory

Corresponding author: LIU Lang,

Corresponding author: ZHAO Peng-Wei,

Received Date: 2013-09-22

Accepted Date: 1900-01-01

Available Online: 2014-07-05

Abstract: The effects of pairing correlation in Yb isotopes are investigated by covariant density functional theory with pairing correlations and blocking effects treated exactly by a shell model like approach (SLAP). Experimental one- and two-neutron separation energies are reproduced quite well. The traditional BCS calculations always give larger pairing energies than those given by SLAP calculations, particularly for the nuclei near the proton and neutron drip lines. This may be caused because many of the single particle orbits above the Fermi surface are involved in the BCS calculations, but many of them are excluded in the SLAP calculations.

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Exact treatment of pairing correlations in Yb isotopes with covariant density functional theory

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