Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-10-02
PoSLAT2007:306,2007
Physics
High Energy Physics
High Energy Physics - Lattice
7 pages, Presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany
Scientific paper
It was recently pointed out that simple scaling properties of Polyakov correlation functions of gauge systems in the confining phase suggest that the ratios of k-string tensions in the low temperature region is constant up to terms of order T^3. Here we argue that, at least in a three-dimensional Z_4 gauge model, the above ratios are constant in the whole confining phase. This result is obtained by combining numerical experiments with known exact results on the mass spectrum of an integrable two-dimensional spin model describing the infrared behaviour of the gauge system near the deconfining transition.
Caselle Michele
Giudice Pietro
Gliozzi Ferdinando
Grinza Paolo
Lottini Stefano
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