{
  "annotation_id": "e38ed9e4-662f-4958-8044-7d8fba0b4b08",
  "date_created": "2026-03-02T18:00:14.828000Z",
  "date_modified": "2026-03-02T18:00:14.828000Z",
  "file_hash": "880e910adb449a98b74087a0b82a59008e52ae49e7811f6bb80557d99ce5babd",
  "private": false,
  "record": {
    "abstract": "The quark-meson coupling model which we have developed previously is extended\nto incorporate the $\\delta$ meson. It is then used to study the Nolen-Schiffer\nanomaly and isospin symmetry breaking in nuclear matter. We find that, in\ncombination with the {\\it u-d\\/} mass difference, the difference between quark\nscalar densities in protons and neutrons generates an effective neutron-proton\nmass difference of the right magnitude. Finally we find that isospin symmetry\nbreaking in the quark condensates can be directly related to the $\\delta$ meson\nfield.",
    "arxiv_id": "nucl-th/9405009",
    "authors": [
      "K. Saito",
      "A. W. Thomas"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1016/0370-2693(94)91551-2",
    "journal_ref": "Phys.Lett.B335:17-23,1994",
    "title": "The Nolen-Schiffer anomaly and isospin symmetry breaking in nuclear   matter",
    "url": "https://arxiv.org/abs/nucl-th/9405009"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e174449c-c224-40b1-9a80-9308c1aae19d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}