Linearly confining force and quark and gluon condensates

Quark and gluon condensates of QCD sum rules generate quark and gluon self-energies, as well as an extra term, which in light front dynamics gives linearly confining force. Transversality of the gluon self-energy, following from Ward identity, selects this extra term. It is proportional to product of null vectors, and in hadron bound state equation it gives linear quark-antiquark potential in any light meson. In baryons the linear quark-quark potential is weaker. 9 refs.; 3 figs