Nonrelativistic limits of the nonlinear point-coupling models and their naturalness

摘要

We obtain the dimensionless coefficients of the single-particle energy density coming from the nonrelativistic limits of nonlinear relativistic hadronic point-coupling models for infinite nuclear matter at zero temperature, in order to analyze their naturalness, and compare them with some well known Skyrme parametrizations. The results show that the naturalness of these nonrelativistic models may be affected or not, depending on some parameters of the corresponding Skyrme models, such as σ and the incompressibility.