Quark confinement from an infrared safe approach

We revisit the nonabelian dipole problem in the context of a simple semiclassical approach which incorporates some essential features of the infrared sector of Yang-Mills theories in the Landau gauge, in particular, the fact that the running coupling remains of moderate size at infrared scales. We obtain a simple flux-tube solution in a controlled approximation scheme, that we compare to the results of lattice simulations.
Comment: 6 pages; 3 figures