Renormalization of the Yang-Mills theories in the light-cone gauge

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Abstract
The structure of the renormalization of the Yang-Mills theories in the light-cone gauge is investigated. It is shown that, despite the appearance of an infinite number of nonlocal divergent terms, the theory can be made finite to any order in the loop expansion by introducing a finite number of renormalization constants. Those constants can be interpreted as coefficients of a canonical transformation of fields and coupling constants in such a way that gauge invariance and unitarity of the renormalized theory are manifestly satisfied. In particular it is shown that the nonlocal structures are completely decoupled from the physical quantities.