Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2007-09-05
Phys.Lett.B656:132-140,2007
Physics
High Energy Physics
High Energy Physics - Lattice
21 pages, 9 figures, 3 tables
Scientific paper
10.1016/j.physletb.2007.09.045
We use lattice techniques to study the closed-string spectrum of SU(N) gauge theories in 2+1 dimensions. We calculate the energies of the lowest lying ~30 states for strings with lengths between l ~ 0.45 fm and l ~ 3 fm, and compare to different theoretical predictions. We obtain unambiguous evidence that the closed-strings are in the universality class of the Nambu-Goto free bosonic string. Moreover, we clearly see that our data can be described by a covariant string theory with a small/moderate correction down to very short distance scales, and possibly on all distance scales at large-N.
Athenodorou Andreas
Bringoltz Barak
Teper Michael
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