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The Conformal anomaly of k-strings

Presenter: Pietro Giudice — Universita' di Torino - INFN Torino

Pietro Giudice, Ferdinando Gliozzi, Stefano Lottini

Simple scaling properties of correlation functions of a confining gauge theory in d-dimensions lead to the conclusion that k-string dynamics is described, in the infrared limit, by a two-dimensional conformal field theory with conformal anomaly c=(d−2)Tk/T1, where Tk is the k-string tension. This result applies to any gauge theory with stable k-strings. We check it in a 3D Z4 gauge model at finite temperature, where a string effect directly related to c can be clearly identified.