Electric dipole polarizability and the neutron skin

Piekarewicz J, Agrawal BK, Colò G, Nazarewicz W, Paar N, Reinhard PG, Roca-Maza X, Vretenar D (2012)

Publication Type: Journal article

Publication year: 2012

Journal

Physical Review C - Nuclear Physics American Physical Society

Book Volume: 85

Article Number: 041302

Journal Issue: 4

DOI: 10.1103/PhysRevC.85.041302

Abstract

The recent high-resolution measurement of the electric dipole (E1) polarizability αD in 208Pb provides a unique constraint on the neutron-skin thickness of this nucleus. The neutron-skin thickness r skin of 208Pb 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 αD and r skin, we carry out systematic calculations for 208Pb, 132Sn, and 48Ca 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 αD and rskin, 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 skin and αD for the nuclei under consideration. We conclude that precise measurements of rskin in both 48Ca and 208Pb-combined with the recent measurement of αD-should significantly constrain the isovector sector of the nuclear energy density functional. © 2012 American Physical Society.

Authors with CRIS profile

Paul-Gerhard Reinhard Naturwissenschaftliche Fakultät

Involved external institutions

Florida State University (FSU) US United States (USA) (US) Saha Institute of Nuclear Physics IN India (IN) Università degli studi di Milano IT Italy (IT) University of Tennessee (UTK) US United States (USA) (US) University of Zagreb / Sveučilište u Zagrebu HR Croatia (HR) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) IT Italy (IT)

How to cite

APA:

Piekarewicz, J., Agrawal, B.K., Colò, G., Nazarewicz, W., Paar, N., Reinhard, P.-G.,... Vretenar, D. (2012). Electric dipole polarizability and the neutron skin. Physical Review C - Nuclear Physics, 85(4). https://doi.org/10.1103/PhysRevC.85.041302

MLA:

Piekarewicz, J., et al. "Electric dipole polarizability and the neutron skin." Physical Review C - Nuclear Physics 85.4 (2012).

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