Electric dipole polarizability and the neutron skin
By J. Piekarewicz, B. K. Agrawal, G. Colò, Witold Nazarewicz, Nils Paar, Paul-Gerhard Reinhard, X. Roca-Maza, D. Vretenar. 2012
159 citations recorded by the source corpus.
The recent high-resolution measurement of the electric dipole (E1) polarizability {alpha}{sub D} in {sup 208}Pb [A. Tamii et al. Phys. Rev. Lett. 107 062502 (2011)] provides a unique constraint on the neutron-skin thickness of this nucleus. The neutron-skin thickness r{sub skin} of {sup 208}Pb is a quantity of critical importance for our understanding of a variety of nuclear and astrophysical phenomena. To assess the model dependence of the correlation between {alpha}{sub D} and r{sub skin}, we carry out systematic calculations for {sup 208}Pb, {sup 132}Sn, and {sup 48}Ca based on the nuclear density functional theory using both nonrelativistic and relativistic energy density functionals. Our analysis indicates that whereas individual models exhibit a linear dependence between {alpha}{sub D} and r{sub skin}, this correlation is not universal when one combines predictions from a host of different models. By averaging over these model predictions, we provide estimates with associated systematic errors for r{sub skin} and {alpha}{sub D} for the nuclei under consideration. We conclude that precise measurements of r{sub skin} in both {sup 48}Ca and {sup 208}Pb - combined with the recent measurement of {alpha}{sub D} - should significantly constrain the isovector sector of the nuclear energy density functional.
Subfields: Nuclear and High Energy Physics, Radiation
View Paper: https://www.semanticscholar.org/paper/3ef0d3e38f89600e9bbebc97d8295147874acce3
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Citations in the corpus
- Error Estimates of Theoretical Models: a Guide (2014, background): “9), neutron skins and dipole polarizability [35, 36, 37], nucleon densities [12], weak-charge form factor [11], and neutron matter equation of state [8, 38, 24, 39, 40, 41, 42, 28].”
- Nuclear equation of state from ground and collective excited state properties of nuclei (2018, methodology): “It has been shown that precise measurements of ∆rnp and αD could significantly constrain the isovector sector of the EDFs [172, 315].”