Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-10-11
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 5 figures. Added a figure for the running coupling measured on the lattice
Scientific paper
We show that, in the infrared limit, Wilson loop gives a potential for a pure Yang-Mills theory that is in agreement with lattice expectations producing confinement. The potential is exactly given in this low-energy limit and the string tension is computed. Saturation of the potential at larger distances, or string breaking, is seen due to the mass gap and higher massive excitations of the gauge field, in agreement with lattice computations.
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