{
  "annotation_id": "b30e8fd0-1891-4af0-9eb6-448d490c3ca7",
  "date_created": "2026-03-02T18:02:00.217000Z",
  "date_modified": "2026-03-02T18:02:00.217000Z",
  "file_hash": "a9e820a5b9c778b27dd697ddbf079b402bb9e2499d009338a0bac10aad0e0d29",
  "private": false,
  "record": {
    "abstract": "We consider the problem of determining the unknown parameters of the\nHamiltonian of a network of spin 1/2 particles. In particular, we study\nexperiments in which the system is driven by an externally applied\nelectro-magnetic field and the expectation value of the total magnetization is\nmeasured. Under appropriate assumptions, we prove that, if it is possible to\nprepare the system in a known initial state, the above experiment allows to\nidentify the parameters of the Hamiltonian. In the case where the initial state\nis itself an unknown parameter, we characterize all the pairs\nHamiltonian-Initial State which give the same value of the magnetization for\nevery form of the driving electro-magnetic field. The analysis is motivated by\nrecent results on the isospectrality of Hamiltonians describing Magnetic\nMolecules.",
    "arxiv_id": "quant-ph/0307128",
    "authors": [
      "Francesca Albertini",
      "Domenico D\u0027Alessandro"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Model identification for spin networks",
    "url": "https://arxiv.org/abs/quant-ph/0307128"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "01b288df-3550-4a11-bcf5-583b849b50e7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}