Trying to understand confinement in the schrödinger picture

We study the gauge-invariant gaussian ansatz for the vacuum wave functional and show that itpotentially posseses many desirable features of the Yang-Mills theory, like asymptotic freedom, mass generation through the transmutation of dimensions and a linear potential between static quarks. We point out that these (and other) features can be studied in a systematic way by combining perturbative and 1/n expansions. Contrary to the euclidean approach, confinement can be easilyformulated and easily built in, if not derived, in the variational Schrödinger approach.