{
  "annotation_id": "975a1ce5-69aa-4e35-bb0b-4c5c1ad09b6e",
  "date_created": "2026-03-02T18:00:04.820000Z",
  "date_modified": "2026-03-02T18:00:04.820000Z",
  "file_hash": "9a76352dd5e2dfc09a097c145f07be124a147f2fcfdd7fb11ce44c9816df21a6",
  "private": false,
  "record": {
    "abstract": "The properties of the low-energy dipole response are investigated for the\nproton-rich doubly magic nucleus $^{48}$Ni, in a comparative study of two\nmicroscopic models: fully self-consistent Relativistic Random-Phase\nApproximation(RRPA) based on the novel density-dependent meson-exchange\ninteractions, and Continuum Random-Phase Approximation(CRPA) using Skyrme-type\ninteractions with the continuum properly included. Both models predict the\nexistence of the low-energy soft mode, i.e. the proton pygmy dipole resonance\n(PDR), for which the transition densities and RPA amplitudes indicate the\ndynamics of loosely bound protons vibrating against the rest of the nucleons.\nThe CRPA analysis indicates that the escape width for the proton PDR is rather\nlarge, as a result of the coupling to the continuum.",
    "arxiv_id": "nucl-th/0506010",
    "authors": [
      "N. Paar",
      "P. Papakonstantinou",
      "V. Yu. Ponomarev",
      "J. Wambach"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/j.physletb.2005.08.043",
    "journal_ref": "Phys.Lett. B624 (2005) 195-202",
    "title": "Low-energy dipole excitations towards the proton drip-line: doubly magic   48Ni",
    "url": "https://arxiv.org/abs/nucl-th/0506010"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "16952994-9649-489e-99aa-fc26d76ee71e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}