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Title: Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach

Abstract

The relation between energy and density (known as the nuclear equation of state) plays a major role in a variety of nuclear and astrophysical systems. Spin and isospin asymmetries can have a dramatic impact on the equation of state and possibly alter its stability conditions. An example is the possible manifestation of ferromagnetic instabilities, which would indicate the existence, at a certain density, of a spin-polarized state with lower energy than the unpolarized one. This issue is being discussed extensively in the literature and the conclusions are presently very model dependent. We will report and discuss our recent progress in the study of spin-polarized neutron matter. The approach we take is microscopic and relativistic. The calculated neutron matter properties are derived from realistic nucleon-nucleon interactions. This makes it possible to understand the properties of the equation of state in terms of specific features of the nuclear force model.

Authors:
;  [1];  [2]
  1. Physics Department, University of Idaho, Moscow, Idaho 83844 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20995128
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 3; Other Information: DOI: 10.1103/PhysRevC.75.034315; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASYMMETRY; DENSITY; EQUATIONS OF STATE; HARTREE-FOCK METHOD; ISOSPIN; NUCLEAR FORCES; NUCLEAR MATTER; NUCLEON-NUCLEON INTERACTIONS; RELATIVISTIC RANGE; SPIN; SPIN ORIENTATION

Citation Formats

Sammarruca, F., Krastev, P. G., and Physics Department, Texas A and M University-Commerce, Commerce, Texas 75429-3011. Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.034315.
Sammarruca, F., Krastev, P. G., & Physics Department, Texas A and M University-Commerce, Commerce, Texas 75429-3011. Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach. United States. doi:10.1103/PHYSREVC.75.034315.
Sammarruca, F., Krastev, P. G., and Physics Department, Texas A and M University-Commerce, Commerce, Texas 75429-3011. Thu . "Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach". United States. doi:10.1103/PHYSREVC.75.034315.
@article{osti_20995128,
title = {Spin polarized neutron matter within the Dirac-Brueckner-Hartree-Fock approach},
author = {Sammarruca, F. and Krastev, P. G. and Physics Department, Texas A and M University-Commerce, Commerce, Texas 75429-3011},
abstractNote = {The relation between energy and density (known as the nuclear equation of state) plays a major role in a variety of nuclear and astrophysical systems. Spin and isospin asymmetries can have a dramatic impact on the equation of state and possibly alter its stability conditions. An example is the possible manifestation of ferromagnetic instabilities, which would indicate the existence, at a certain density, of a spin-polarized state with lower energy than the unpolarized one. This issue is being discussed extensively in the literature and the conclusions are presently very model dependent. We will report and discuss our recent progress in the study of spin-polarized neutron matter. The approach we take is microscopic and relativistic. The calculated neutron matter properties are derived from realistic nucleon-nucleon interactions. This makes it possible to understand the properties of the equation of state in terms of specific features of the nuclear force model.},
doi = {10.1103/PHYSREVC.75.034315},
journal = {Physical Review. C, Nuclear Physics},
number = 3,
volume = 75,
place = {United States},
year = {Thu Mar 15 00:00:00 EDT 2007},
month = {Thu Mar 15 00:00:00 EDT 2007}
}