{
  "annotation_id": "031e1ae8-1ac3-41d8-acbb-20273550a2a3",
  "date_created": "2026-03-02T18:00:43.475000Z",
  "date_modified": "2026-03-02T18:00:43.475000Z",
  "file_hash": "0daa30477034041be092cd4feef3623b97a29996e63172cbb7be32023ad5bf68",
  "private": false,
  "record": {
    "abstract": "The Lagrangian and Hamiltonian functions describing average motion of a\nrelativistic particle under the action of a slightly inhomogeneous intense\nlaser field are obtained. In weak low-frequency background fields, such a\nparticle on average drifts with an effective, relativistically invariant mass,\nwhich depends on the laser intensity. The essence of the proposed ponderomotive\nformulation is presented in a physically intuitive and mathematically simple\nform, yet represents a powerful tool for studying various nonlinear phenomena\ncaused by interaction of currently available smooth ultra-intense laser pulses\nwith plasmas.",
    "arxiv_id": "physics/0304079",
    "authors": [
      "I. Y. Dodin",
      "N. J. Fisch",
      "G. M. Fraiman"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "doi": "10.1134/1.1622032",
    "title": "Drift Lagrangian for relativistic particle in intense laser field",
    "url": "https://arxiv.org/abs/physics/0304079"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e1e24d96-7328-41fa-ba98-4ca52fa702a0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}