Topology and Confinement in SU(N) Gauge Theories
B. Lucini, M. Teper
Abstract
The large N limit of SU(N) gauge theories in 3+1 dimensions is investigated on the lattice by extrapolating results obtained for 2 N 5. A numerical determination of the masses of the lowest-lying glueball states and of the topological susceptibility in the limit N∞ is provided. Ratios of the tensions of stable k-strings over the tension of the fundamental string are investigated in various regimes and the results are compared with expectations based on several scenarios -- in particular MQCD and Casimir scaling. While not conclusive at zero temperature in D=3+1, in the other cases investigated our data seem to favour the latter.
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