{
  "id": "1901.03636",
  "version": "v1",
  "published": "2019-01-11T16:30:27.000Z",
  "updated": "2019-01-11T16:30:27.000Z",
  "title": "Transport through a magnetic impurity: a slave-spin approach",
  "authors": [
    "Daniele Guerci"
  ],
  "comment": "12 pages, 6 figures",
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We study transport across a magnetic impurity by means of a recently developed slave-spin technique that does not require any constraint. Within a conserving mean-field approximation we find a conductance that displays both the known zero-bias anomaly but also the expected peak at bias of order U. We extend the slave-spin mean-field approximation to study the out of equilibrium transient evolution of a quantum dot. We apply the method to investigate the time-evolution of a quantum dot induced by a time-dependent electrochemical potential applied to the contacts. Similarly to the time-dependent Gutzwiller approximation, the mean-field slave-spin dynamics is able to capture dissipation in the leads, so that a steady-state is reached after a characteristic relaxation time.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2019-01-11T16:30:27.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetic impurity",
      "slave-spin approach",
      "quantum dot",
      "time-dependent gutzwiller approximation",
      "equilibrium transient evolution"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 12,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}