{
  "annotation_id": "7049be88-74c9-48fa-884b-188f72127981",
  "date_created": "2026-03-02T18:00:49.715000Z",
  "date_modified": "2026-03-02T18:00:49.715000Z",
  "file_hash": "7246568a258637068466b3c04aeeaf43beaaff288866df760208cc6700beb7e9",
  "private": false,
  "record": {
    "abstract": "Infrared quadrupole modes (IRQM) of the valence electrons in light deformed\nsodium clusters are studied by means of the time-dependent local-density\napproximation (TDLDA). IRQM are classified by angular momentum components\n$\\lambda\\mu =$20, 21 and 22 whose $\\mu$ branches are separated by cluster\ndeformation. In light clusters with a low spectral density, IRQM are\nunambiguously related to specific electron-hole excitations, thus giving access\nto the single-electron spectrum near the Fermi surface (HOMO-LUMO region). Most\nof IRQM are determined by cluster deformation and so can serve as a sensitive\nprobe of the deformation effects in the mean field. The IRQM branch $\\lambda\\mu\n=$21 is coupled with the magnetic scissors mode, which gives a chance to detect\nthe latter. We discuss two-photon processes, Raman scattering (RS), stimulated\nemission pumping (SEP), and stimulated adiabatic Raman passage (STIRAP), as the\nrelevant tools to observe IRQM. A new method to detect the IRQM population in\nclusters is proposed.",
    "arxiv_id": "physics/0405004",
    "authors": [
      "V. O. Nesterenko",
      "P. -G. Reinhard",
      "W. Kleinig",
      "D. S. Dolci"
    ],
    "categories": [
      "physics.atm-clus",
      "physics.optics"
    ],
    "doi": "10.1103/PhysRevA.70.023205",
    "journal_ref": "Phys.Rev.A70:023205,2004",
    "title": "Infrared electron modes in light deformed clusters",
    "url": "https://arxiv.org/abs/physics/0405004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "7e7c641c-8149-4bbc-8c29-38bb18ff5cae",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}