{
  "annotation_id": "78604301-4708-4568-8555-9159bba02d70",
  "date_created": "2026-03-02T18:00:15.303000Z",
  "date_modified": "2026-03-02T18:00:15.303000Z",
  "file_hash": "4baf9de5f298e9c4bf7cd7241a95c6356be2766bf1bcc2323c604a2ba36f12ed",
  "private": false,
  "record": {
    "abstract": "Excited states of the nucleon are described as RPA configurations on a\nmean--field ground state taken from the MIT bag model. A residual interaction\nof a structure as in the Nambu--Jona--Lasinio model is used. The particle-hole\nstates are coupled to good total angular momentum and isospin. Valence\nexcitations of particle-hole type and quark--antiquark ($q\\overline{q}$) states\nfrom the Dirac--sea are included. The dependence of the baryon spectrum and\nmultipole response functions on the coupling constant $G$ is studied. At\ncritical values of $G$ the 3q--ground state becomes degenerate with strongly\ncollective $q\\overline{q}$ modes. The model is used to calculate the electric\npolarizability of the neutron $\\alpha_N$. Without residual interaction\n$\\alpha_N=7\\cdot 10^{-4}fm^3$ is found. With residual interaction the value\nincreases to $\\alpha_N=(7-11)\\cdot 10^{-4}fm^3$. The measured value of\n$\\alpha_N$ is reproduced within experimental error bars.",
    "arxiv_id": "nucl-th/9511030",
    "authors": [
      "J. Geiss",
      "S. Hardt",
      "H. Lenske",
      "U. Mosel"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1007/s002180050153",
    "journal_ref": "Z.Phys. A356 (1996) 99-106",
    "title": "RPA Description of the Electric Polarizability of the Nucleon",
    "url": "https://arxiv.org/abs/nucl-th/9511030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "37ca095f-9481-4202-8df8-597fc5f37997",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}