{
  "id": "1610.08657",
  "version": "v1",
  "published": "2016-10-27T08:25:17.000Z",
  "updated": "2016-10-27T08:25:17.000Z",
  "title": "Critical properties of the eight-vertex model in a field",
  "authors": [
    "Roman Krčmár",
    "Ladislav Šamaj"
  ],
  "comment": "7 pages, 10 figures",
  "journal": "EPL 115 (2016) 56001",
  "doi": "10.1209/0295-5075/115/56001",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "The general eight-vertex model on a square lattice is studied numerically by using the Corner Transfer Matrix Renormalization Group method. The method is tested on the symmetric (zero-field) version of the model, the obtained dependence of critical exponents on model's parameters is in agreement with Baxter's exact solution and weak universality is verified with a high accuracy. It was suggested longtime ago that the symmetric eight-vertex model is a special exceptional case and in the presence of external fields the eight-vertex model falls into the Ising universality class. We confirm numerically this conjecture in a subspace of vertex weights, except for two specific combinations of vertical and horizontal fields for which the system still exhibits weak universality.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-10-27T08:25:17.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "critical properties",
      "transfer matrix renormalization group method",
      "corner transfer matrix renormalization group",
      "weak universality",
      "eight-vertex model falls"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}