{
  "annotation_id": "44503127-c67a-49fe-a927-eaf0b684294b",
  "date_created": "2026-03-02T18:01:20.929000Z",
  "date_modified": "2026-03-02T18:01:20.929000Z",
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  "record": {
    "abstract": "The geometric phase is usually treated as a quantity modulo 2\\pi, a\nconvention carried over from early work on the subject. The results of a series\nof optical interference experiments involving polarization of light, done by\nthe present author (reviewed in R.Bhandari, Phys. Rep. 281 (1997) p.1) question\nthe usefulness of such a definition of the geometric phase in that it throws\naway useful and measurable information about the system, for example strengths\nof singularities giving rise to the geometric phase. Such singularities have\nbeen directly demonstrated by phase-shift measurement in interference\nexperiments. In this paper, two recent polarization experiments (Hariharan\net.al., J.Mod.Opt. 44 (1997)p.707 and Berry and Klein, J.Mod.Opt. 43\n(1996)p.165) are analysed and compared with previous experiments and\npotentially detectible singularities in these experiments pointed out.",
    "arxiv_id": "physics/9810045",
    "authors": [
      "Rajendra Bhandari"
    ],
    "categories": [
      "physics.optics",
      "quant-ph"
    ],
    "doi": "10.1080/09500349808231754",
    "journal_ref": "J.Mod.Opt., 1998, vol.45, no.10, pp 2187-2195",
    "title": "On Geometric Phase from Pure Projections",
    "url": "https://arxiv.org/abs/physics/9810045"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "954ca5e2-bb7d-4b7b-b4cf-6cb238ae5a02",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}