Abstract
Motivated by arguments based on spontaneous breaking of scale invariance, a term of the form [Formula: see text] is introduced in the action of the gauge fields. For N<0 this leads to linear confinement, while for N>0, after appropriate regularization, this leads to the vanishing of the gauge fields beyond a critical length, i.e. to a different realization of confinement. A mechanism where two values of N can be connected is discussed.
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