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The spectrum of closed loops of fundamental flux in D=2+1 SU(N) gauge theories.

Presenter: Andreas Athenodorou — University of Oxford

Andreas Athenodorou, Barak Bringoltz and Michael Teper

We study the closed-string spectrum of SU(N) gauge theories in 2+1 dimensions. We calculate the energies of the lowest lying ∼30 states using a large variety of operators characterised by the quantum numbers of parity and longitudinal momentum. We find that our results for the ground state are very well aproximated by the Nambu-Goto (NG) predictions even for short strings. For the excited states, we observe significant deviations from the NG predictions that decrease with increasing string length. We discuss the continuum and large N limits.