{
  "annotation_id": "6c350059-ca22-4ae0-9b7b-65a48c2a4f2f",
  "date_created": "2026-03-02T18:02:51.347000Z",
  "date_modified": "2026-03-02T18:02:51.347000Z",
  "file_hash": "482519749dc75cd5c4d2872a90b2db03764d19ba6682c3981b97422e84eb2e39",
  "private": false,
  "record": {
    "abstract": "In this letter, I have considered one-dimensional quantum system with\ndifferent masses $m$ and $M$, which does not appear integrable in general.\nHowever I have found an exact two-body wave function and due to the extension\nof the integrable system to more general system, it was concluded that the\nrapidity or quasi-momentum in the integrable system should be regarded as a\nmodification of velocity rather than that of momentum. I have also considered\nthe three-body wave function and argued its integrable condition.",
    "arxiv_id": "solv-int/9707006",
    "authors": [
      "Shigeki Matsutani"
    ],
    "categories": [
      "solv-int",
      "nlin.SI"
    ],
    "title": "Quantum Coupled Nonlinear Schr\\\"odinger System with Different Masses",
    "url": "https://arxiv.org/abs/solv-int/9707006"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "dc8fa0b3-4142-4852-8c27-8d476b2fa0fb",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}