{
  "id": "cond-mat/0210644",
  "version": "v1",
  "published": "2002-10-29T14:07:39.000Z",
  "updated": "2002-10-29T14:07:39.000Z",
  "title": "Decoherence of interacting electrons in disordered conductors: on the relation between influence functional and diagrammatic approaches",
  "authors": [
    "Jan von Delft"
  ],
  "comment": "6 pages LaTeX, 2 figures, for conference proceedings: \"Quantum Transport and Quantum Coherence\" -- Localisation 2002 Sophia University, Tokyo, August 16-19, 2002, to be published in a supplement of the Journal of Physical Society of Japan",
  "categories": [
    "cond-mat.mes-hall",
    "cond-mat.dis-nn"
  ],
  "abstract": "We establish a connection between the influence functional approach of Golubev and Zaikin (GZ) and Keldysh diagrammatic perturbation theory for calculating the decoherence time of interacting electrons in disordered metals; we show how the standard diagrams for the Cooperon self energy can be recovered from GZ's influence functional $e^{- (i S_R + S_I)}$. This allows us to shed light on GZ's claim that $S_R$ is irrelevant for decoherence: $S_R$ generates as many important self energy diagrams as $S_I$; GZ's neglect of $S_R$ is permissible only at high temperatures ($T > \\hbar / \\tau_{el}$).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2002-10-29T14:07:39.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "interacting electrons",
      "diagrammatic approaches",
      "disordered conductors",
      "decoherence",
      "important self energy diagrams"
    ],
    "tags": [
      "conference paper",
      "journal article"
    ],
    "publication": {
      "doi": "10.1143/JPSJS.72SA.24",
      "journal": "Journal of the Physical Society of Japan",
      "year": 2003,
      "month": "Jan",
      "volume": 72,
      "pages": 24
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2003JPSJ...72S..24V"
    }
  }
}