Abstract
We calculate the low-lying glueball spectrum and various string tensions in SU(N ) lattice gauge theories in 2 + 1 dimensions, and extrapolate the results to the continuum limit. We do so for for the range N ∈ [2, 16] so as to control the N -dependence with a useful precision. We observe a number of striking near-degeneracies in the various J PC sectors of the glueball spectrum, in particular between C = + and C = − states. We calculate the string tensions of flux tubes in a number of representations, and provide evidence that the leading correction to the N -dependence of the k-string tensions is ∝ 1/N rather than ∝ 1/N 2, and that the dominant binding of k fundamental flux tubes into a k-string is via pairwise interactions. We comment on the possible implications of our results for the dynamics of these gauge theories.
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ArXiv ePrint: 1609.03873
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Athenodorou, A., Teper, M. SU(N ) gauge theories in 2+1 dimensions: glueball spectra and k-string tensions. J. High Energ. Phys. 2017, 15 (2017). https://doi.org/10.1007/JHEP02(2017)015
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DOI: https://doi.org/10.1007/JHEP02(2017)015