• Title of article

    Mixed quark-gluon condensate from instantons

  • Author/Authors

    M.V. Polyakov، نويسنده , , C. Weiss، نويسنده ,

  • Issue Information
    روزنامه با شماره پیاپی سال 1996
  • Pages
    7
  • From page
    841
  • To page
    847
  • Abstract
    We calculate the vacuum expectation value of the dimension-5 “mixed” quark-gluon operator, Oσ = Ψ12λaσμνΨFμνa, in the instanton vacuum. Within the 1Nc-expansion the QCD operator is replaced by an effective many-fermion operator, which is averaged over the effetive theory of massive quarks derived from instantons. We find m02 ≡ 〈Oσ〉/〈ΨΨ〉 ≈ 4ϱ– = 1.4 GeV2, somewhat larger than the estimate from QCD sum rules for the nucleon.
  • Keywords
    Instantons , Non-perturbative methods in QCD , QCD sum rules , View the MathML source expansion
  • Journal title
    PHYSICS LETTERS B
  • Serial Year
    1996
  • Journal title
    PHYSICS LETTERS B
  • Record number

    907322

    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=10&DC=907322