Properties of strange hadronic matter in bulk and in finite systems
By Juergen Schaffner-Bielich, Avraham Gal. 2000
174 citations recorded by the source corpus.
The hyperon-hyperon potentials due to a recent SU(3) Nijmegen soft-core potential model are incorporated within a relativistic mean field calculation of strange hadronic matter. We find considerably higher binding energy in bulk matter compared to several recent calculations which constrain the composition of matter. For small strangeness fractions ${(f}_{S}\ensuremath{\lesssim}1),$ matter is dominated by $N\ensuremath{\Lambda}\ensuremath{\Xi}$ composition and the calculated binding energy closely follows that calculated by using the hyperon potentials of our previous calculations. For larger strangeness fractions ${(f}_{S}\ensuremath{\gtrsim}1),$ the calculated binding energy increases substantially beyond any previous calculation due to a phase transition into $N\ensuremath{\Sigma}\ensuremath{\Xi}$ dominated matter. We also compare bulk matter calculations with finite system calculations, again highlighting the consequences of reducing the Coulomb destabilizing effects in finite strange systems.
Subfields: Astronomy and Astrophysics, Geophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/50dc2751983c0abf6d0aee90b2276f8b3fb32253
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Citations in the corpus
- Hyperons in neutron-star cores and a 2 M⊙ pulsar (2011, background): “The semiempirical estimates are U (N) Λ = −28 MeV, U (N) Σ = +30 MeV, U (N) Ξ = −18 MeV (Schaffner-Bielich & Gal 2000).”
- Hyperons in neutron star matter within relativistic mean-field models (2014, background): “In [6], such a phase transition has been discussed for relativistic mean-ˇeld models, but within a model with very strong Y Y attraction.”