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On the structure of QCD confining string

Presenter: Fedor Gubarev — ITEP, Moscow

P.Yu. Boyko, F.V. Gubarev, S.M. Morozov

We report measurements of confining string action density profile performed in SU(2) lattice Yang-Mills theory at widely varied lattice spacing. The gluon condensate is shown to vanish on the string symmetry axis and we qualitatively confirm logarithmic string widening. However, the broadening is likely to be a subleading effect since the string width shrinks almost linearly with lattice spacing while the action density quadratically diverges keeping the static potential cutoff independent.