  We provide a set of exact solutions of the classical Yang-Mills equations.
They have the property to satisfy a massive dispersion relation and hold in all
gauges. These solutions can be used to describe the vacuum of the quantum
Yang-Mills theory and so, they provide a general framework to build a quantum
field theory. The components of the field become separated on a generic gauge
but are all equal just in the Lorenz (Landau) gauge.
