Effect of Λ hyperons on the nuclear equation of state in a Dirac-Brueckner-Hartree-Fock model

2009/02/05 by Francesca Sammarruca
Physics and Astronomy · #Baryon #Dirac (video compression format) #Dirac equation #Equation of state #High-Energy Particle Collisions Research #Hyperon #Lambda #Mathematical physics #Meson #Neutrino #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Particle physics #Physics #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #nucl-th

paper · pdf · doi:10.1103/physrevc.79.034301

published as Phys.Rev.C79:034301,2009 · 12 pages, 3 figures. Accepted for publication in Physical Review C

arxiv created 2009/02/05 · openalex publication_date 2009/03/03 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We predict the energy per baryon in nuclear matter with non-zero fractions of \ensuremathΛ hyperons. We include Dirac effects on the nucleon as well as the \ensuremathΛ and describe how the latter are implemented. We use the nucleon-hyperon meson-exchange potentials from the J"ulich group, the latest as well as an earlier version. The dependence of the results on the many-body framework and on the nucleon-hyperon interaction model is discussed.

Citations

• Σ-nucleus potential studied with the(π−,K+)reaction on medium-to-heavy nuclear targets
• Hyperon-hyperon interactions and properties of neutron star matter
• Properties of strange hadronic matter in bulk and in finite systems
• Hyperon-nucleon single-particle potentials with low-momentum interactions
• Strange two-baryon interactions using chiral effective field theory