Lee-Yang–inspired energy-density functional including contributions from p-wave scattering

Jérémy Bonnard, Marcella Grasso, and Denis Lacroix
Phys. Rev. C 101, 064319 – Published 18 June 2020

Abstract

The ELYO (extended Lee-Yang-Orsay) functional proposed in M. Grasso, D. Lacroix, and C. J. Yang [Phys. Rev. C 95, 054327 (2017)] belongs to the family of energy-density functionals (EDFs) inspired by effective-field theories and constrained by ab initio pseudodata. We present here an extension of this EDF which also accounts for the first p-wave term appearing in the low-density expansion from which it derives. It is shown that this enrichment of the ansatz on which the functional is based leads to a significant improvement of the description of neutronic systems, especially in regimes besides the pseudodata set employed to adjust the parameters. As an illustrative application, the mass-radius relation of neutron stars is considered. In contrast to its initial version, the new functional predicts values which are qualitatively consistent with recent observations.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
1 More
  • Received 22 January 2020
  • Accepted 21 May 2020

DOI:https://doi.org/10.1103/PhysRevC.101.064319

©2020 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Jérémy Bonnard1,2,*, Marcella Grasso2,†, and Denis Lacroix2,‡

  • 1Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
  • 2Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France

  • *jeremy.bonnard@york.ac.uk
  • marcella.grasso@ijclab.in2p3.fr
  • denis.lacroix@ijclab.in2p3.fr

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 6 — June 2020

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×