{
  "annotation_id": "54c1806e-e402-4b97-9938-c65c8e12e1e3",
  "date_created": "2026-03-02T18:00:18.851000Z",
  "date_modified": "2026-03-02T18:00:18.851000Z",
  "file_hash": "64acc7427f5182a5d64da30315cce971f53ed79e89a9a193dad7a97ab11b7cc6",
  "private": false,
  "record": {
    "abstract": "We report variational calculations of symmetric nuclear matter and pure\nneutron matter, using the new Argonne v18 two-nucleon and Urbana IX\nthree-nucleon interactions. At the equilibrium density of 0.16 fm^-3 the\ntwo-nucleon densities in symmetric nuclear matter are found to exhibit a\nshort-range spin-isospin structure similar to that found in light nuclei. We\nalso find that both symmetric nuclear matter and pure neutron matter undergo\ntransitions to phases with pion condensation at densities of 0.32 fm^-3 and 0.2\nfm^-3, respectively. Neither transtion occurs with the Urbana v14 two-nucleon\ninteraction, while only the transition in neutron matter occurs with the\nArgonne v14 two-nucleon interaction. The three-nucleon interaction is required\nfor the transition to occur in symmetric nuclear matter, whereas the the\ntransition in pure neutron matter occurs even in its absence. The behavior of\nthe isovector spin-longitudinal response and the pion excess in the vicinity of\nthe transition, and the model dependence of the transition are discussed.",
    "arxiv_id": "nucl-th/9705013",
    "authors": [
      "Arya Akmal",
      "Vijay R. Pandharipande"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.56.2261",
    "journal_ref": "Phys.Rev.C56:2261-2279,1997",
    "title": "Spin-Isospin Structure and Pion Condensation in Nucleon Matter",
    "url": "https://arxiv.org/abs/nucl-th/9705013"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "127ad0ae-0140-4e35-b08b-387530058147",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}