Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-06-15
Phys.Rev.Lett.102:152503,2009
Physics
Nuclear Physics
Nuclear Theory
Scientific paper
10.1103/PhysRevLett.102.152503
We present a new Skyrme-Hartree-Fock-Bogoliubov nuclear-mass model in which the contact-pairing force is constructed from microscopic pairing gaps of symmetric nuclear matter and neutron matter calculated from realistic two- and three-body forces, with medium-polarization effects included. With the pairing being treated more realistically than in any of our earlier models, the rms deviation with respect to essentially all the available mass data falls to 0.581 MeV, the best value ever found within the mean-field framework. Since our Skyrme force is also constrained by the properties of pure neutron matter, this new model is particularly well suited for application to astrophysical problems involving a neutron-rich environment, such as the elucidation of the r process of nucleosynthesis, and the description of supernova cores and neutron-star crusts.
Chamel Nicolas
Goriely Stephane
Pearson Michael J.
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