{
  "annotation_id": "14740c83-c152-4fb4-ad93-d18dac0a3ab5",
  "date_created": "2026-03-02T18:01:42.461000Z",
  "date_modified": "2026-03-02T18:01:42.461000Z",
  "file_hash": "8fa78abaea7a37d434de633d56c42ffaaa7934592f254dd2451cb6688f0efdb9",
  "private": false,
  "record": {
    "abstract": "We examine the passage of ultra-cold two-level atoms through the potential\nproduced by the vacuum of the cavity field. The peak of the transmitted wave\npacket generally occurs at the instant given by the expression for phase time\neven if that instant is earlier than the instant at which incident wave\npacket\u0027s peak enters the cavity and thus the phase time can be considered as\nthe appropriate measure of the time required for the atom to traverse the\ncavity. We show that the phase tunneling time for ultra-cold atoms could be\nboth super - and sub - classical time and we show how this behaviour can be\nunderstood in terms of the momentum dependence of the phase of transmission\namplitude. The passage of the atom through the cavity is unique as it involves\na coherent addition of the transition amplitudes corresponding to both barrier\nand well. New features such as the splitting of the wave packet arise from the\nentanglement between the center of mass motion and the electronic as well as\nfield states in the cavity.",
    "arxiv_id": "quant-ph/0103015",
    "authors": [
      "R. Arun",
      "G. S. Agarwal"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.065802",
    "title": "Tunneling and Traversal of Ultra-cold Atoms through Vacuum Induced   Potentials",
    "url": "https://arxiv.org/abs/quant-ph/0103015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "8a61447c-0bd8-43c2-afd6-a160263fc4a1",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}