Non-empirical pairing energy functional in nuclear matter and finite nuclei

Abstract

We study 1S0 pairing gaps in neutron and nuclear matter as well as in finite nuclei on the basis of microscopic two-nucleon interactions. Special attention is paid to the consistency of the pairing interaction and normal self-energy contributions. We find that pairing gaps obtained from low-momentum interactions depend only weakly on approximation schemes for the normal self-energy, required in present energy-density functional calculations, while pairing gaps from hard potentials are very sensitive to the effective-mass approximation scheme.

14 pages, 12 figures, published version

References in corpus (7)

• Low-momentum interactions with smooth cutoffs
• Microscopic calculation and LDA of the spatial dependence of the pairing field with bare and induced interactions
• Non-empirical pairing functional
• Neutron matter at finite temperature
• Density Matrix Expansion for Low-Momentum Interactions
• Dependence of the BCS 1S0 superfluid pairing gap on nuclear interactions
• Pairing in the Framework of the Unitary Correlation Operator Method (UCOM): Hartree-Fock-Bogoliubov Calculations