The Width of the Colour Flux Tube

Abstract

We discuss and rederive in a general way the logarithmic growth of the mean squared width of the colour flux tube as a function of the interquark separation. Recent data on 3D $Z_2$ gauge theory, combined with high precision data on the interface physics of the 3D Ising model fit nicely this behaviour over a range of more than two orders of magnitude.

Comments: 3 pages, contribution to the Lattice '94 conference, uuencoded compressed ps-file