Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2001-10-01
Nucl.Phys.Proc.Suppl. 106 (2002) 685-687
Physics
High Energy Physics
High Energy Physics - Lattice
3 pages, 2 figures; talk presented by B. Lucini at Lattice2001(confinement)
Scientific paper
The large N limit of SU(N) gauge theories in 3+1 dimensions is investigated on the lattice by extrapolating results obtained for $2 \le N \le 5$. A numerical determination of the masses of the lowest-lying glueball states and of the topological susceptibility in the limit $N\to\infty$ 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.
Lucini Biagio
Teper Michael
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