{
  "annotation_id": "a079ed85-8d89-4e23-a4cb-0a86ed449f86",
  "date_created": "2026-03-02T18:01:48.485000Z",
  "date_modified": "2026-03-02T18:01:48.485000Z",
  "file_hash": "ee3427763ce51664d04be16fcd23747c1b5e29dc066ded4d49b3ec5c4aec4d5b",
  "private": false,
  "record": {
    "abstract": "We depict and analyze a new effect for wavepackets falling freely under a\nbarrier or well. The effect appears for wavepackets whose initial spread is\nsmaller than the combination $\\ds \\sqrt{\\frac{l_g^3}{|z_0|}}$, between the\ngravitational length scale $\\ds l_g = \\frac{1}{(2 m^2 g)^{1/3}}$ and the\ninitial location of the packet $z_0$. It consists of a diffractive structure\nthat is generated by the falling and spreading wavepacket and the waves\nreflected from the obstacle. The effect is enhanced when the Gross-Pitaevskii\ninteraction for positive scattering length is included. The theoretical\nanalysis reproduces the essential features of the effect. Experiments emanating\nfrom the findings are proposed.",
    "arxiv_id": "quant-ph/0203036",
    "authors": [
      "G. K\u00e4lbermann"
    ],
    "categories": [
      "quant-ph",
      "cond-mat",
      "nucl-th"
    ],
    "title": "Wavepackets falling under a mirror",
    "url": "https://arxiv.org/abs/quant-ph/0203036"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b9cfc8c7-8532-43c6-8d90-d5281dbd4e54",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}