{
  "id": "hep-ph/0508211",
  "version": "v2",
  "published": "2005-08-19T13:34:47.000Z",
  "updated": "2005-11-21T03:32:27.000Z",
  "title": "Meson-loop contributions to the quark condensate from the instanton vacuum",
  "authors": [
    "Hyun-Chul Kim",
    "M. M. Musakhanov",
    "M. Siddikov"
  ],
  "comment": "Final version accepted for publication in Phys. Lett. B. The title was changed. Small corrections were added",
  "journal": "Phys.Lett. B633 (2006) 701-709",
  "doi": "10.1016/j.physletb.2005.11.054",
  "categories": [
    "hep-ph"
  ],
  "abstract": "We investigate the quark condensate of the QCD vacuum within the instanton vacuum model. We calculate the meson-loop contributions to the dynamical quark mass and quark condensate to ${\\cal O}(1/N_c)$-, ${\\cal O}(m/N_c)$-, and ${\\cal O}((m\\ln m) /N_c)$-order corrections. We find that the meson (especially pion) loops provide substantial contributions to the dynamical quark mass and as a result to the quark condensate. The results indicate that the $1/N_c$ corrections should be reconsidered in the systematical way. The present results are consistent with those from chiral perturbation theory.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2005-11-21T03:32:27.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Rd",
      "14.65.Bt"
    ],
    "keywords": [
      "quark condensate",
      "meson-loop contributions",
      "dynamical quark mass",
      "chiral perturbation theory",
      "instanton vacuum model"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 690289
    }
  }
}