The closed string spectrum of SU(N) gauge theories in 2+1 dimensions

Abstract

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.

21 pages, 9 figures, 3 tables

References in corpus (2)

• A precise calculation of the fundamental string tension in SU(N) gauge theories in 2+1 dimensions
• String-like behaviour of 4d SU(3) Yang-Mills flux tubes

Cited by in corpus (10)

• Closed k-strings in SU(N) gauge theories : 2+1 dimensions
• Zero Point Energy of Renormalized Wilson Loops
• Thermodynamics of SU(3) Gauge Theory in 2 + 1 Dimensions
• First study of the gluon-quark-antiquark static potential in SU(3) Lattice QCD
• On the spectrum of closed k=2 flux tubes in D=2+1 SU(N) gauge theories
• The confining string beyond the free-string approximation in the gauge dual of percolation
• Fluctuations of the baryonic flux-tube junction from effective string theory
• Implementation of the Duality between Wilson loops and Scattering Amplitudes in QCD
• The spectrum of closed loops of fundamental flux in D=2+1 SU(N) gauge theories
• The Confinement Property in SU(3) Gauge Theory