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Abstract
摘要 |
Multi-neutron systems are crucial to understand the physics of neutron-rich nuclei and neutron stars. Neutron drops are systems of neutrons confined in an external field. In this talk, I will present our recent results on neutron drops in both non-relativistic and relativistic density functional theories and with ab initio calculations. In particular, we demonstrate a strong linear correlation, which is universal in the realm of mean-field models, between the root-mean-square (rms) radii of neutron drops and the neutron skin thickness of 208Pb and 48Ca; i.e., the difference between the neutron and proton rms radii of a nucleus. Due to its high quality, this correlation can be used to deduce the radii of neutron drops from the measured neutron skin thickness in a model-independent way, and the radii obtained for neutron drops can provide a useful constraint for realistic three neutron forces. |
