{
  "annotation_id": "251009b6-f4c1-4c0d-acaa-882c0c055244",
  "date_created": "2026-03-02T18:00:42.810000Z",
  "date_modified": "2026-03-02T18:00:42.810000Z",
  "file_hash": "6d618dc4aaf5e81a15264505bb9acfa6f524be4c244910da565d932e9ba3300d",
  "private": false,
  "record": {
    "abstract": "Chiral molecules are characterized by a specific optical rotation angle. An\nexperimental method was presented to dissect the temperature dependence of the\noptical rotation angle with the molecular chirality of D-alanine, L-alanine and\nDL-alanine crystals. Salam hypothesis predicted that quantum mechanical\ncooperative and condensation phenomena may give rise to a second order phase\ntransition below a critical temperature linking the transformation of D-amino\nacids to L-amino acids due to parity-violating energy difference. The\ntemperature- dependent measurement of the optical rotation angle of D-, L- and\nDL-alanine crystals provided the direct evidence of the phase transition, but\ndenied the configuration change from D-alanine to L-alanine. New views on Salam\nhypothesis are presented to demonstrate its importance in the application of\nlow temperature enantiomeric separation and the origin of biochirality.",
    "arxiv_id": "physics/0210109",
    "authors": [
      "Fan Bai",
      "Miao Zhang",
      "Wenqing Wang"
    ],
    "categories": [
      "physics.bio-ph"
    ],
    "title": "Temperature dependence of optical rotation study on parity-violating   phase transition of D-, L-, and DL-alanine",
    "url": "https://arxiv.org/abs/physics/0210109"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "acbf67a1-66f6-4abf-ab23-cce77daef1f0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}