Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-02-09
Phys.Rev.C82:054319,2010
Physics
Nuclear Physics
Nuclear Theory
32 pages, 12 figures, 4 tables, accepted by Phys. Rev. C
Scientific paper
10.1103/PhysRevC.82.054319
A new parametrization PC-PK1 for the nuclear covariant energy density functional with nonlinear point-coupling interaction is proposed by fitting to observables for 60 selected spherical nuclei, including the binding energies, charge radii and empirical pairing gaps. The success of PC-PK1 is illustrated in its description for infinite nuclear matter and finite nuclei including the ground-state and low-lying excited states. Particularly, PC-PK1 improves the description for isospin dependence of binding energy along either the isotopic or the isotonic chains, which makes it more reliable for application in exotic nuclei. The predictive power of PC-PK1 is also illustrated for the nuclear low-lying excitation states in a five-dimensional collective Hamiltonian in which the parameters are determined by constrained calculations for triaxial shapes.
Li Zhi Peng
Meng Jie
Yao J. M.
Zhao P. W.
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