{
  "id": "cond-mat/9912079",
  "version": "v1",
  "published": "1999-12-06T09:46:29.000Z",
  "updated": "1999-12-06T09:46:29.000Z",
  "title": "Collective excitations in Quantum Dot",
  "authors": [
    "Subhasis Sinha"
  ],
  "comment": "Tex file, 4 figures ps files",
  "doi": "10.1016/S1386-9477(00)00112-0",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We investigate different types of collective excitations in a quantum dot containing finite number of electrons at zero magnetic field. To estimate the excitation energies analytically we follow the energy weighted sum-rule approach. We consider the most general multipole excitation with angular momentum l, and the breathing mode excitation (monopole excitation) of a large quantum dot, for three different types of effective electron-electron interaction. These are the logarithmic interaction, the short range pseudopotential and the coulomb interaction. The ground state density of the many-body system is calculated within Thomas-Fermi approximation. The analytical results for the collective excitation energies and their dependence on the system size and other external parameters are discussed in detail.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-12-06T09:46:29.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "collective excitation",
      "quantum dot containing finite number",
      "excitation energies",
      "interaction",
      "large quantum dot"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}