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Title: Neutron-Rich Nuclei and Neutron Stars: A New Accurately Calibrated Interaction for the Study of Neutron-Rich Matter

Abstract

An accurately calibrated relativistic parametrization is introduced to compute the ground state properties of finite nuclei, their linear response, and the structure of neutron stars. While similar in spirit to the successful NL3 parameter set, it produces an equation of state that is considerably softer--both for symmetric nuclear matter and for the symmetry energy. This softening appears to be required for an accurate description of several collective modes having different neutron-to-proton ratios. Among the predictions of this model are a symmetric nuclear-matter incompressibility of K=230 MeV and a neutron skin thickness in {sup 208}Pb of R{sub n}-R{sub p}=0.21 fm. The impact of such a softening on various neutron-star properties is also examined.

Authors:
;  [1]
  1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
Publication Date:
OSTI Identifier:
20699438
Resource Type:
Journal Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 95; Journal Issue: 12; Other Information: DOI: 10.1103/PhysRevLett.95.122501; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; EQUATIONS OF STATE; GROUND STATES; LEAD 208; MEV RANGE 100-1000; NEUTRON STARS; NEUTRON-RICH ISOTOPES; NUCLEAR MATTER; RELATIVISTIC RANGE; SYMMETRY; THICKNESS

Citation Formats

Todd-Rutel, B G, and Piekarewicz, J. Neutron-Rich Nuclei and Neutron Stars: A New Accurately Calibrated Interaction for the Study of Neutron-Rich Matter. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.122501.
Todd-Rutel, B G, & Piekarewicz, J. Neutron-Rich Nuclei and Neutron Stars: A New Accurately Calibrated Interaction for the Study of Neutron-Rich Matter. United States. https://doi.org/10.1103/PhysRevLett.95.122501
Todd-Rutel, B G, and Piekarewicz, J. 2005. "Neutron-Rich Nuclei and Neutron Stars: A New Accurately Calibrated Interaction for the Study of Neutron-Rich Matter". United States. https://doi.org/10.1103/PhysRevLett.95.122501.
@article{osti_20699438,
title = {Neutron-Rich Nuclei and Neutron Stars: A New Accurately Calibrated Interaction for the Study of Neutron-Rich Matter},
author = {Todd-Rutel, B G and Piekarewicz, J},
abstractNote = {An accurately calibrated relativistic parametrization is introduced to compute the ground state properties of finite nuclei, their linear response, and the structure of neutron stars. While similar in spirit to the successful NL3 parameter set, it produces an equation of state that is considerably softer--both for symmetric nuclear matter and for the symmetry energy. This softening appears to be required for an accurate description of several collective modes having different neutron-to-proton ratios. Among the predictions of this model are a symmetric nuclear-matter incompressibility of K=230 MeV and a neutron skin thickness in {sup 208}Pb of R{sub n}-R{sub p}=0.21 fm. The impact of such a softening on various neutron-star properties is also examined.},
doi = {10.1103/PhysRevLett.95.122501},
url = {https://www.osti.gov/biblio/20699438}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 12,
volume = 95,
place = {United States},
year = {2005},
month = {9}
}