The symmetry energy γ parameter of relativistic mean-field models
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1708.01521.pdf
Description
Accepted version
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300.15 KB
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Author(s)
Dutra, Mariana
Lourenço, Odilon
Hen, Or
Piasetzky, Eliezer
Menezes, Débora P.
Date Issued
May 2018
Journal
Chinese Physics C
Publisher
IOP Publishing
Citation
Dutra, Mariana et al., "The symmetry energy ˠ parameter of relativistic mean-field models" Chinese Physics C, 42, 6 (May 2018): 064105 doi. 10.1088/1674-1137/42/6/064105 ©2018 Authors
Version
Author's final manuscript
Abstract
The relativistic mean-field models tested in previous works against nuclear matter experimental values, critical parameters and macroscopic stellar properties are revisited and used in the evaluation of the symmetry energy γ parameter obtained in three different ways. We have checked that, independent of the choice made to calculate the γ values, a trend of linear correlation is observed between γ and the symmetry energy () and a more clear linear relationship is established between γ and the slope of the symmetry energy (L 0). These results directly contribute to the arising of other linear correlations between γ and the neutron star radii of and , in agreement with recent findings. Finally, we have found that short-range correlations induce two specific parametrizations, namely, IU-FSU and DD-MEδ, simultaneously compatible with the neutron star mass constraint of and with the overlap band for the region, to present γ in the range of. ©2018 Chinese Physical Society and the Institute of High Energy Physics of the Chinese Academy of Sciences and the Institute of Modern Physics of the Chinese Academy of Sciences and IOP Publishing Ltd.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/1674-1137/42/6/064105
