Intermediate-Distance String Effects in Wilson Loops via Boundary Action
Abstract
The density profile of the QCD flux tube is investigated within the framework of the L¨ uscher-Weisz (LW)
string action with two boundary terms. The transverse action profile and potential between static quarks
are considered using Wilson’s loop overlap formalism at zero temperature in SU(2) Yang-Mills theory. We
find the predictions of the LWstring matching the lattice data for the width of the energy-density and Q ¯Q
potential up to a small color-source separation of R = 0.32 fm.

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