{
  "id": "2011.12741",
  "version": "v1",
  "published": "2020-11-25T13:52:16.000Z",
  "updated": "2020-11-25T13:52:16.000Z",
  "title": "Higher-order correlations in transition metal dichalcogenides",
  "authors": [
    "A. Kudlis",
    "I. Iorsh"
  ],
  "categories": [
    "cond-mat.mes-hall"
  ],
  "abstract": "We analyze the many-particle correlations that affect the optical properties of transition-metal dichalcogenide monolayers. These correlations manifest themselves through the specific optical resonances such as excitons, trions, etc. As the starting point the conventional electron-hole Hamiltonian with potential in the Keldysh-Rytova form is considered. By means of this model and microscopic Heisenberg equation of motion the infinite hierarchy of differential equations can be obtained. In order to decouple a such system we address the cluster expansion technique which provides a regular procedure of consistent accounting of many-particle correlation contributions into the interband polarization dynamics. In particular, the partially taken into account three-particle correlations modify the behavior of absorption spectra with the emergence of a trion-like peak additional to excitonic ones.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-11-25T13:52:16.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "transition metal dichalcogenides",
      "higher-order correlations",
      "microscopic heisenberg equation",
      "many-particle correlation contributions",
      "transition-metal dichalcogenide monolayers"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}