Coulomb-Gauge in QCD

Renormalization and Confinement

Daniel Zwanziger

    Research output: Contribution to journalArticle

    Abstract

    We review the Coulomb gauge in QCD and report some recent results. The minimal Coulomb gauge is defined and the fundamental modular region, a region without Gribov copies, is described. The Coulomb gauge action is expressed in terms of the dynamical degrees of freedom with an instantaneous Coulomb interaction, and its physical meaning is discussed. The local Coulomb gauge action with phase-space and ghost variables is derived, and its BRS-invariance and renormalizability are reviewed. It is shown that the instantaneous part V(R) of g2D00(R,t), the time-time component of the gluon propagator, is a renormalization-group invariant V(R) = f (RΛQCD)/R, and that the contribution of V(R) to the Wilson loop exponentiates. It is conjectured that V(R) ≃ κcoul R at large R, and that κcoul provides an order parameter for confinement of color even in the presence of dynamical quarks.

    Original languageEnglish (US)
    Pages (from-to)233-242
    Number of pages10
    JournalProgress of Theoretical Physics Supplement
    Issue number131
    StatePublished - 1998

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    quantum chromodynamics
    ghosts
    invariance
    degrees of freedom
    quarks
    color
    propagation
    interactions

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Coulomb-Gauge in QCD : Renormalization and Confinement. / Zwanziger, Daniel.

    In: Progress of Theoretical Physics Supplement, No. 131, 1998, p. 233-242.

    Research output: Contribution to journalArticle

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