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.

Keywords

• Boundary terms, Bosonic strings, Effective string theory, Lattice gauge theory, Flux tubes, string formation, Confinement
• Monte Carlo Methods