{
  "annotation_id": "a4d34ffa-19fd-4672-9299-3b300b234347",
  "date_created": "2026-03-02T18:00:17.929000Z",
  "date_modified": "2026-03-02T18:00:17.929000Z",
  "file_hash": "b095b6d19c48665555ca2253cf86b68655f4f21e07042a33dba56719d44232ea",
  "private": false,
  "record": {
    "abstract": "An effective equation of state (EoS) which generalizes the Lattimer-Swesty\nequation for nuclear matter is presented for matter at supernuclear densities\nincluding strange baryons. It contains an adjustable baryon potential energy\ndensity, based on models of local potentials for the baryon-baryon\ninteractions. The features of the equation rely on the properties of nuclei for\nthe nucleon-nucleon interactions, and mainly on experimental data from\nhypernuclei for the hyperon-nucleon and hyperon-hyperon interactions. The EoS\nis used to calculate equilibrium compositions and thermodynamic properties of\nhigh density matter with strangeness in two astrophysical contexts: neutron\nstar matter (transparent to neutrinos) and proto-neutron star matter (opaque to\nneutrinos). The effective EoS reproduces typical properties of high density\nmatter found in theoretical microscopic models. Of these, the main result is\nthat hyperons appear in both types of matter at about twice the nuclear\nsaturation density, and that their appearance significantly softens the EoS.\nThe range of maximal masses of neutron stars found in a comprehensive parameter\nsurvey is 1.4-1.7 $M_\\odot$. Another typical result is that the maximal mass of\na proto-neutron star with strange baryons is higher than that of an evolved\nneutron star (opposite to the case of nuclear matter), setting the stage for a\n\"delayed collapse\" scenario.",
    "arxiv_id": "nucl-th/9704013",
    "authors": [
      "Shmuel Balberg",
      "Avraham Gal"
    ],
    "categories": [
      "nucl-th",
      "astro-ph"
    ],
    "doi": "10.1016/S0375-9474(97)81465-0",
    "journal_ref": "Nucl.Phys. A625 (1997) 435-472",
    "title": "An Effective Equation of State for Dense Matter with Strangeness",
    "url": "https://arxiv.org/abs/nucl-th/9704013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "491001fd-0373-4946-b102-24d5244fe0ef",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}