{
  "annotation_id": "86e4a7bd-340d-4d7f-9893-35a9263b56f7",
  "date_created": "2026-03-02T18:01:00.065000Z",
  "date_modified": "2026-03-02T18:01:00.065000Z",
  "file_hash": "723328c2412627b19f7f7e6bd4c74562841a8464631819c236c2c259a42bea3f",
  "private": false,
  "record": {
    "abstract": "We have observed spontaneous symmetry breaking of atomic populations in the\ndynamic phase-space double-potential system, which is produced in the\nparametrically driven magneto-optical trap of atoms. We find that the system\nexhibits similar characteristics of the Ising-class phase transition and the\ncritical value of the control parameter, which is the total atomic number, can\nbe calculated. In particular, the collective effect of the laser shadow becomes\ndominant at large atomic number, which is responsible for the population\nasymmetry of the dynamic two-state system. This study may be useful for\ninvestigation of dynamic phase transition and temporal behaviour of critical\nphenomena.",
    "arxiv_id": "physics/0507041",
    "authors": [
      "Kihwan Kim",
      "Myoung-Sun Heo",
      "Ki-Hwan Lee",
      "Kiyoub Jang",
      "Heung-Ryoul Noh",
      "Doochul Kim",
      "Wonho Jhe"
    ],
    "categories": [
      "physics.atom-ph",
      "physics.gen-ph"
    ],
    "doi": "10.1103/PhysRevLett.96.150601",
    "title": "Spontaneous Symmetry Breaking of Population between Two Dynamic   Attractors in a Driven Atomic Trap: Ising-class Phase Transition",
    "url": "https://arxiv.org/abs/physics/0507041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "66a8c1f6-acc4-44a8-8c6a-1efa621fa02d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}