Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System
Abstract
The colour fields created by the static tetraquark system are computed in quenched SU(3) lattice QCD, in a 24^3 x 48 lattice at beta=6.2 corresponding to a lattice spacing a=0.07261(85) fm. We find that the tetraquark colour fields are well described by a double-Y, or butterfly, shaped flux tube. The two flux tube junction points are compatible with Fermat points minimizing the total flux tube length. We also compare the diquark-diantiquark central flux tube profile in the tetraquark with the quark-antiquark fundamental flux tube profile in the meson, and they match, thus showing that the tetraquark flux tubes are composed of fundamental flux tubes.
Cite
@article{arxiv.1107.1355,
title = {Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System},
author = {N. Cardoso and M. Cardoso and P. Bicudo},
journal= {arXiv preprint arXiv:1107.1355},
year = {2011}
}
Comments
5 pages, 7 figures, 0 tables, one reference added, work done partly under the PT-LQCD Collaboration