{
  "annotation_id": "9ba9a088-f68c-4510-93f5-0f72122cb8f9",
  "date_created": "2026-03-02T18:00:39.430000Z",
  "date_modified": "2026-03-02T18:00:39.430000Z",
  "file_hash": "1c7f58f187b3e306c310404314499865e77bccbd7038fba6e3c44ebad910865f",
  "private": false,
  "record": {
    "abstract": "We use the variational method to obtain approximate analytical expressions\nfor the stationary pulselike solutions in birefringent fibers when differences\nin both phase velocities and group velocities between the two components and\nrapidly oscillating terms are taken into account. After checking the validity\nof the approximation we study how the soliton pulse shape depends on its\nvelocity and nonlinear propagation constant. By numerically solving the\npropagation equation we have found that most of these stationary solutions are\nstable.",
    "arxiv_id": "physics/0203085",
    "authors": [
      "N. J. Rodriguez-Fernandez",
      "J. M. Soto-Crespo"
    ],
    "categories": [
      "physics.optics",
      "nlin.PS"
    ],
    "doi": "10.1080/09500349808231741",
    "journal_ref": "Journal of Modern Optics v.45, p.2039, 1998",
    "title": "Variational approach for walking solitons in birefringent fibres",
    "url": "https://arxiv.org/abs/physics/0203085"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3982b4c7-236c-435c-81ef-cdb84e3dd1ed",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}