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Title: Landau parameters for isospin asymmetric nuclear matter based on a relativistic model of composite and finite extension nucleons

Abstract

We study the properties of cold asymmetric nuclear matter at high density, applying the quark meson coupling model with excluded volume corrections in the framework of the Landau theory of relativistic Fermi liquids. We discuss the role of the finite spatial extension of composite baryons on dynamical and statistical properties such as the Landau parameters, the compressibility, and the symmetry energy. We have also calculated the low-lying collective eigenfrequencies arising from the collisionless quasiparticle transport equation, considering both unstable and stable modes. An overall analysis of the excluded volume correlations on the collective properties is performed.

Authors:
;  [1]
  1. Departamento de Fisica, Fac. de Ciencias Exactas, Universidad Nacional de La Plata. C. C. 67 (1900) La Plata (Argentina)
Publication Date:
OSTI Identifier:
20995232
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 4; Other Information: DOI: 10.1103/PhysRevC.75.045207; (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; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ASYMMETRY; COMPRESSIBILITY; DENSITY; FERMI GAS; ISOSPIN; MESONS; NUCLEAR MATTER; NUCLEONS; QUARKS; RELATIVISTIC RANGE; TRANSPORT THEORY

Citation Formats

Aguirre, R. M., and Paoli, A. L. de. Landau parameters for isospin asymmetric nuclear matter based on a relativistic model of composite and finite extension nucleons. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.045207.
Aguirre, R. M., & Paoli, A. L. de. Landau parameters for isospin asymmetric nuclear matter based on a relativistic model of composite and finite extension nucleons. United States. doi:10.1103/PHYSREVC.75.045207.
Aguirre, R. M., and Paoli, A. L. de. Sun . "Landau parameters for isospin asymmetric nuclear matter based on a relativistic model of composite and finite extension nucleons". United States. doi:10.1103/PHYSREVC.75.045207.
@article{osti_20995232,
title = {Landau parameters for isospin asymmetric nuclear matter based on a relativistic model of composite and finite extension nucleons},
author = {Aguirre, R. M. and Paoli, A. L. de},
abstractNote = {We study the properties of cold asymmetric nuclear matter at high density, applying the quark meson coupling model with excluded volume corrections in the framework of the Landau theory of relativistic Fermi liquids. We discuss the role of the finite spatial extension of composite baryons on dynamical and statistical properties such as the Landau parameters, the compressibility, and the symmetry energy. We have also calculated the low-lying collective eigenfrequencies arising from the collisionless quasiparticle transport equation, considering both unstable and stable modes. An overall analysis of the excluded volume correlations on the collective properties is performed.},
doi = {10.1103/PHYSREVC.75.045207},
journal = {Physical Review. C, Nuclear Physics},
number = 4,
volume = 75,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}
  • Self-consistent mean-field methods based on phenomenological Skyrme effective interactions are known to exhibit spurious spin and spin-isospin instabilities both at zero and finite temperatures when applied to homogeneous nuclear matter at the densities encountered in neutron stars and in supernova cores. The origin of these instabilities is revisited in the framework of the nuclear energy density functional theory, and a simple prescription is proposed to remove them. The stability of several Skyrme parametrizations is reexamined.
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