{
  "id": "hep-ph/0101216",
  "version": "v2",
  "published": "2001-01-19T09:16:39.000Z",
  "updated": "2001-11-15T09:25:48.000Z",
  "title": "Fermion propagator in out of equilibrium quantum-field system and the Boltzmann equation",
  "authors": [
    "A. Niégawa"
  ],
  "comment": "27 pages",
  "journal": "Phys.Rev. D65 (2002) 056009",
  "doi": "10.1103/PhysRevD.65.056009",
  "categories": [
    "hep-ph",
    "hep-th"
  ],
  "abstract": "We aim to construct from first principles a perturbative framework for studying nonequilibrium quantum-field systems that include massless Dirac fermions. The system of our concern is quasiuniform system near equilibrium or nonequilibrium quasistationary system. We employ the closed-time-path formalism and use the so-called gradient approximation. Essentially no further approximation is introduced. We construct a fermion propagator, with which a well-defined perturbative framework is formulated. In the course of construction of the framework, we obtain the generalized Boltzmann equation (GBE) that describes the evolution of the number-density functions of (anti)fermionic quasiparticles.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2001-11-15T09:25:48.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "12.38.Bx",
      "11.10.Wx",
      "12.38.Mh"
    ],
    "keywords": [
      "boltzmann equation",
      "fermion propagator",
      "studying nonequilibrium quantum-field systems",
      "perturbative framework",
      "nonequilibrium quasistationary system"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. D"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 27,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 552277
    }
  }
}