Noncompact gauge theories demonstrate confinement in lattice settings, suggesting effective new methods for gauge invariance.
A noncompact regularization of gauge theories is presented where exact gauge invariance at finite lattice spacing is obtained by means of an auxiliary field which decouples in the continuum limit. The result of the evaluation of the renormalization scale parameter and of the string tension are reported, showing the same evidence for confinement as in Wilson's scheme.The new regularization is used to define composite gauge fields.
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Palumbo F. (1992) studied this question.
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