{
  "id": "cond-mat/9701198",
  "version": "v3",
  "published": "1997-01-28T11:48:55.000Z",
  "updated": "1997-08-06T13:43:28.000Z",
  "title": "Thermodynamics of dissipative quantum systems by effective potential",
  "authors": [
    "Alessandro Cuccoli",
    "Andrea Rossi",
    "Valerio Tognetti",
    "Ruggero Vaia"
  ],
  "comment": "4 pages, 3 figures included by psfig (minor corrections in revised version)",
  "journal": "Phys. Rev. E 55, R4849 (1997)",
  "doi": "10.1103/PhysRevE.55.R4849",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "Classical-like formulas are given in order to evaluate thermal averages of observables belonging to a quantum nonlinear system with dissipation described by the Caldeira-Leggett model [Phys. Rev. Lett. 46, 211 (1981); Ann. Phys. (N.Y.) 149, 374 (1983)]. The underlying scheme is the pure-quantum self-consistent harmonic approximation, which leads to expressions with a Boltzmann factor involving an effective potential and with a Gaussian average. The latter describes the effect of the fluctuations of purely quantum origin. As an illustration we calculate the coordinate probability distribution for a double-well potential in the presence of various degrees of Ohmic dissipation.",
  "revisions": [
    {
      "version": "v3",
      "updated": "1997-08-06T13:43:28.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dissipative quantum systems",
      "effective potential",
      "thermodynamics",
      "pure-quantum self-consistent harmonic approximation",
      "coordinate probability distribution"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}