Dual Superconductivity. Variations on a Theme

Abstract

It is pointed out that the low energy effective theory that describes the low lying glueballs of the pure Yang Mills theory sustains static classical stringlike solutions. We suggest that these objects can be identified with the QCD flux tubes and their energy per unit length with the string tension.

Comments: 14 pages, latex, no figures, to be published in the special issue of Foundations of Physics dedicated to Larry Horwitz