{
  "annotation_id": "d8e737a4-a601-4846-b20c-921417442fd1",
  "date_created": "2026-03-02T18:02:03.647000Z",
  "date_modified": "2026-03-02T18:02:03.647000Z",
  "file_hash": "5287896914a34bec08c4417aae9aaf31583d5c8cc031d3128bc057ab8bdb8fdc",
  "private": false,
  "record": {
    "abstract": "We consider a collection of bosonic modes corresponding to the vertices of a\ngraph $\\Gamma.$ Quantum tunneling can occur only along the edges of $\\Gamma$\nand a local self-interaction term is present. Quantum entanglement of one\nvertex with respect the rest of the graph is analyzed in the ground-state of\nthe system as a function of the tunneling amplitude $\\tau.$ The topology of\n$\\Gamma$ plays a major role in determining the tunneling amplitude $\\tau^*$\nwhich leads to the maximum ground-state entanglement. Whereas in most of the\ncases one finds the intuitively expected result $\\tau^*=\\infty$ we show that it\nthere exists a family of graphs for which the optimal value of$\\tau$ is pushed\ndown to a finite value. We also show that, for complete graphs, our bi-partite\nentanglement provides useful insights in the analysis of the cross-over between\ninsulating and superfluid ground states",
    "arxiv_id": "quant-ph/0311058",
    "authors": [
      "Paolo Giorda",
      "Paolo Zanardi"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1209/epl/i2004-10129-2",
    "title": "Ground-State Entanglement in Interacting Bosonic Graphs",
    "url": "https://arxiv.org/abs/quant-ph/0311058"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "6864b43b-32fc-4825-9353-a343bb53183c",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}