{
  "id": "0807.1417",
  "version": "v2",
  "published": "2008-07-09T11:15:30.000Z",
  "updated": "2008-10-06T14:50:03.000Z",
  "title": "Vector-axialvector mixing from a chiral effective field theory at finite temperature",
  "authors": [
    "M. Harada",
    "C. Sasaki",
    "W. Weise"
  ],
  "comment": "v2:11 pages, 6 figures, reorganized and expanded the text, new plots and references added, main result and conclusions unchanged",
  "journal": "Phys.Rev.D78:114003,2008",
  "doi": "10.1103/PhysRevD.78.114003",
  "categories": [
    "hep-ph",
    "nucl-th"
  ],
  "abstract": "We study the vector-axialvector mixing in a hot medium and its evolution toward the chiral phase transition using different symmetry restoration scenarios based on the generalized hidden local symmetry framework. We show that the presence of the $a_1$ meson reduces the vector spectral function around $\\rho$ meson mass and enhances it around $a_1$ meson mass. The coupling strength of $a_1$ to $\\rho$ and $\\pi$ vanishes at the critical temperature due to the degenerate $\\rho$-$a_1$ masses. This feature holds rigorously in the chiral limit and still stays intact to good approximation for the physical pion mass.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-10-06T14:50:03.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Rd",
      "12.38.Aw",
      "12.39.Fe"
    ],
    "keywords": [
      "chiral effective field theory",
      "vector-axialvector mixing",
      "finite temperature",
      "meson mass",
      "generalized hidden local symmetry framework"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review D",
      "year": 2008,
      "month": "Dec",
      "volume": 78,
      "number": 11,
      "pages": 114003
    },
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 790308,
      "adsabs": "2008PhRvD..78k4003H"
    }
  }
}