Highly excited pure gauge SU(3) flux tubes

Abstract

Flux tube spectra are expected to have full towers of levels due to the quantization of the string vibrations. We study a spectrum of flux tubes with static quark and antiquark sources with pure gauge $SU(3)$ lattice QCD in 3+1 dimensions up to a significant number of excitations. To go high in the spectrum, we specialize in the most symmetric case ${\Sigma }_g^{+}$, use a large set of operators, solve the generalized eigenvalue and compare different lattice QCD gauge actions and anisotropies.

Comments: 7 pages, 8 figures, 1 table, submitted contribution to the proceedings of "The 38th International Symposium on Lattice Field Theory, LATTICE2021", 26th-30th July, 2021, Zoom/Gather@Massachusetts Institute of Technology, this is similar to a contribution to the proceedings of "A Virtual Tribute to Quark Confinement and the Hadron Spectrum 2021", 2-6 August 2021, online