## Abstract

The behavior of the Wilson loop average W(C) is considered in non-perturbative QCD. The idea is to start from small contours and then proceed to larger ones treating the effects of vacuum fields phenomenologically, through matrix elements like 〈g^{2}G_{μν}^{a}G_{μν}^{a}〉. An expansion is derived which gives W(C) as an infinite series of local gluonic operators. A few terms in this series are calculated exactly revealing a highly non-trivial dependence on the contour variables. Under a certain approximation an infinite set of leading terms is isolated and summed up. The result depends on the area of the contour, but this dependence is not quite satisfactory. As a byproduct of the analysis it is shown that in a framework of multicolor chromodynamics the bag picture of Callan et al., cannot be realized.

Original language | English (US) |
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Pages (from-to) | 13-31 |

Number of pages | 19 |

Journal | Nuclear Physics B |

Volume | 173 |

Issue number | 1 |

DOIs | |

State | Published - Jan 1 1980 |