{
  "annotation_id": "f84bfa95-235b-4898-8c3b-9556c29d994d",
  "date_created": "2026-03-02T17:59:57.976000Z",
  "date_modified": "2026-03-02T17:59:57.976000Z",
  "file_hash": "00272594e08ad3668414dfb08ac0151407bf3c31e0258b3a5d3f644460b77c10",
  "private": false,
  "record": {
    "abstract": "We investigate the accuracy of several schemes to calculate ground-state\ncorrelation energies using the generator coordinate technique. Our test-bed for\nthe study is the $sd$ interacting boson model, equivalent to a 6-level\nLipkin-type model. We find that the simplified projection of a triaxial\ngenerator coordinate state using the $S_3$ subgroup of the rotation group is\nnot very accurate in the parameter space of the Hamiltonian of interest. On the\nother hand, a full rotational projection of an axial generator coordinate state\ngives remarkable accuracy. We also discuss the validity of the simplified\ntreatment using the extended Gaussian overlap approximation (top-GOA), and show\nthat it works reasonably well when the number of boson is four or larger.",
    "arxiv_id": "nucl-th/0304059",
    "authors": [
      "K. Hagino",
      "G. F. Bertsch",
      "P. -G. Reinhard"
    ],
    "categories": [
      "nucl-th"
    ],
    "doi": "10.1103/PhysRevC.68.024306",
    "title": "Generator Coordinate Truncations",
    "url": "https://arxiv.org/abs/nucl-th/0304059"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d8335a73-5e35-4ab6-a19c-c7b5b6019cca",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}