{
  "id": "1510.07333",
  "version": "v1",
  "published": "2015-10-26T00:17:54.000Z",
  "updated": "2015-10-26T00:17:54.000Z",
  "title": "Microscopic theory of a phase transition in a critical region: Bose-Einstein condensation in an interacting gas",
  "authors": [
    "Vitaly V. Kocharovsky",
    "Vladimir V. Kocharovsky"
  ],
  "comment": "5 pages",
  "journal": "Physics Letters A 379, 466-470 (2015)",
  "doi": "10.1016/j.physleta.2014.10.052",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "We present a microscopic theory of the second order phase transition in an interacting Bose gas that allows one to describe formation of an ordered condensate phase from a disordered phase across an entire critical region continuously. We derive the exact fundamental equations for a condensate wave function and the Green functions, which are valid both inside and outside the critical region. They are reduced to the usual Gross-Pitaevskii and Beliaev-Popov equations in a low-temperature limit outside the critical region. The theory is readily extendable to other phase transitions, in particular, in the physics of condensed matter and quantum fields.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-10-26T00:17:54.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "microscopic theory",
      "bose-einstein condensation",
      "interacting gas",
      "second order phase transition",
      "low-temperature limit outside"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Elsevier"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}