Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory
Abstract
We present predictions for the neutron matter equation of state, from leading to fourth order of chiral effective field theory, using recently developed, accurate chiral nucleon-nucleon potentials. For the many-body method, we employ the nonperturbative particle-particle ladder approximation, that is, we solve the G-matrix equation. Furthermore, we find the impact of subleading three-neutron forces to be mild and attractive. We also show order-by-order predictions for the symmetry energy, and discuss its density dependence in relation to empirical constraints. For the nuclear matter equation of state, in this work we adopt an empirical parametrization with good saturation properties. This is to highlight, specifically, the energy and pressure in neutron matter, particularly when comparing with empirical constraints.
- Authors:
-
- Univ. of Idaho, Moscow, ID (United States)
- Publication Date:
- Research Org.:
- Univ. of Idaho, Moscow, ID (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1820909
- Grant/Contract Number:
- FG02-03ER41270
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 104; Journal Issue: 3; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; Nuclear many-body theory; Nuclear matter; Nuclear matter in neutron stars
Citation Formats
Sammarruca, Francesca, and Millerson, Randy. Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory. United States: N. p., 2021.
Web. doi:10.1103/physrevc.104.034308.
Sammarruca, Francesca, & Millerson, Randy. Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory. United States. https://doi.org/10.1103/physrevc.104.034308
Sammarruca, Francesca, and Millerson, Randy. Fri .
"Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory". United States. https://doi.org/10.1103/physrevc.104.034308. https://www.osti.gov/servlets/purl/1820909.
@article{osti_1820909,
title = {Analysis of the neutron matter equation of state and the symmetry energy up to fourth order of chiral effective field theory},
author = {Sammarruca, Francesca and Millerson, Randy},
abstractNote = {We present predictions for the neutron matter equation of state, from leading to fourth order of chiral effective field theory, using recently developed, accurate chiral nucleon-nucleon potentials. For the many-body method, we employ the nonperturbative particle-particle ladder approximation, that is, we solve the G-matrix equation. Furthermore, we find the impact of subleading three-neutron forces to be mild and attractive. We also show order-by-order predictions for the symmetry energy, and discuss its density dependence in relation to empirical constraints. For the nuclear matter equation of state, in this work we adopt an empirical parametrization with good saturation properties. This is to highlight, specifically, the energy and pressure in neutron matter, particularly when comparing with empirical constraints.},
doi = {10.1103/physrevc.104.034308},
journal = {Physical Review C},
number = 3,
volume = 104,
place = {United States},
year = {Fri Sep 10 00:00:00 EDT 2021},
month = {Fri Sep 10 00:00:00 EDT 2021}
}
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