Constraints on Skyrme Equations of State from Properties of Doubly Magic Nuclei and Ab-Initio Calculations of Low-Density Neutron Matter

A. Schwenk; B. Alex Brown

Constraints on Skyrme Equations of State from Properties of Doubly Magic Nuclei and Ab-Initio Calculations of Low-Density Neutron Matter

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arxiv 1311.3957 v1 pith:UP4HHIRO submitted 2013-11-15 nucl-th

B. Alex Brown , A. Schwenk This is my paper · ORCID

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abstract

We use properties of doubly-magic nuclei and ab-initio calculations of low-density neutron matter to constrain Skyrme equations of state for neutron-rich conditions. All of these properties are consistent with a Skyrme functional form and a neutron-matter equation of state that depends on three parameters. With a reasonable range for the neutron-matter effective mass, the values of the two other Skyrme parameters are well constrained. This leads to predictions for other quantities. The neutron skins for $^{208}$Pb and $^{48}$Ca are predicted to be 0.182(10) fm and 0.173(5) fm, respectively. Other results including the dipole polarizability are discussed.

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Constraints on Skyrme Equations of State from Doubly Magic Nuclei, Ab-Initio Calculations of Low-Density Neutron Matter, and Neutron Stars
nucl-th 2019-08 conditional novelty 6.0 of 10

The authors find that reproducing a 2.1 solar mass maximum neutron star requires a neutron effective mass of 0.60-0.65 at saturation density, leading to radius 12.4 km and tidal deformability 423 for a 1.4 solar mass star.

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