Bounds on free energy in QCD

Axel Maas, Daniel Zwanziger

    Research output: Contribution to journalConference articlepeer-review

    Abstract

    We derive some exact bounds on the free energy W(J) in QCD, where J μb is a source for the gluon field A μb in the minimal Landau gauge, andW(J) is the generating functional of connected gluon correlators. Among other results, we show that for a static source J(x) = h the free energy vanishes, W(h) = 0, together with its first derivative,∂W(h)/∂h = 0, for all h, no matter how strong. Thus the system does not respond to a static color probe. We also present numerical evaluations of the free energy W(J) and find that the bounds are well satisfied and in fact undersaturated.

    Original languageEnglish (US)
    JournalProceedings of Science
    StatePublished - 2012
    Event10th Conference on Quark Confinement and the Hadron Spectrum, Confinement 2012 - Munich, Germany
    Duration: Oct 8 2012Oct 12 2012

    ASJC Scopus subject areas

    • General

    Fingerprint Dive into the research topics of 'Bounds on free energy in QCD'. Together they form a unique fingerprint.

    Cite this