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Wilson loops in strongly coupled noncommutative gauge theories

A. Dhar·Y. Kitazawa
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Abstract

We discuss Wilson loop averages in 4-dimensional non-commutative superYang-Mills theory using the dual supergravity description. We postulate that the Wilson loops are located at the mimimum length scale $R$ in the fifth radial coordinate. We find that they exhibit a crossover from Coulomb type of behaviour for large loops, for which non-commutativity is unimportant, to area law for small loops, for which non-commutativity effects are large. The string tension, which can be read off from the area law, is controlled by the non-commutativity scale. The crossover itself, however, appears to involve loops of size of order $R$ which is much larger than the non-commutativity scale. The existence of the area law in non-commutative super Yang-Mills theory which persists up to a large crossover length scale provides further evidence for connection to an underlying string theory.

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A. Dhar, Y. Kitazawa. 2001-03-09. Wilson loops in strongly coupled noncommutative gauge theories. https://doi.org/10.1103/physrevd.63.125005

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