{
  "id": "cond-mat/9706048",
  "version": "v1",
  "published": "1997-06-06T01:06:19.000Z",
  "updated": "1997-06-06T01:06:19.000Z",
  "title": "Magnetic Correlation Length and Universal Amplitude of the Lattice E_8 Ising Model",
  "authors": [
    "M. T. Batchelor",
    "K. A. Seaton"
  ],
  "comment": "7 pages, Latex",
  "journal": "J.Phys. A30 (1997) L479",
  "doi": "10.1088/0305-4470/30/15/001",
  "categories": [
    "cond-mat.stat-mech",
    "hep-th"
  ],
  "abstract": "The perturbation approach is used to derive the exact correlation length $\\xi$ of the dilute A_L lattice models in regimes 1 and 2 for L odd. In regime 2 the A_3 model is the E_8 lattice realisation of the two-dimensional Ising model in a magnetic field h at T=T_c. When combined with the singular part f_s of the free energy the result for the A_3 model gives the universal amplitude $f_s \\xi^2 = 0.061~728...$ as $h\\to 0$ in precise agreement with the result obtained by Delfino and Mussardo via the form-factor bootstrap approach.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-06-06T01:06:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "magnetic correlation length",
      "universal amplitude",
      "ising model",
      "form-factor bootstrap approach",
      "exact correlation length"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Journal of Physics A Mathematical General",
      "year": 1997,
      "month": "Aug",
      "volume": 30,
      "number": 15
    },
    "note": {
      "typesetting": "LaTeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 459546,
      "adsabs": "1997JPhA...30L.479B"
    }
  }
}