Hot QCD, k-strings and the adjoint monopole gas model

Details Hot QCD, k-strings and the adjoint monopole gas model Hot QCD, k-strings and the adjoint monopole gas model

2005-09-02

arxiv.org/abs/hep-ph/0509018v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

48 pages, 7 figures

Scientific paper

When the magnetic sector of hot QCD, 3D SU(N) Yang-Mills theory, is described as a dilute gas of non-Abelian monopoles in the adjoint representation of the magnetic group, Wilson loops of N-ality k are known to obey a periodic k(N-k) law. Lattice simulations have confirmed this prediction to a few percent for N=4 and 6. We describe in detail how the magnetic flux of the monopoles produces different area laws for spatial Wilson k-loops. A simple physical argument is presented, why the predicted and observed Casimir scaling is allowed in the large-N limit by usual power-counting arguments. The same scaling is also known to hold in two-loop perturbation theory for the spatial 't Hooft loop, which measures the electric flux. We then present new lattice data for 3D N=8 k-strings as long as 3`fm' that provide further confirmation. Finally we suggest new tests in theories with spontaneous breaking and in SO(4n+2) gauge groups.

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