Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System

Details Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System

2011-07-07

arxiv.org/abs/1107.1355v2

Phys.Rev.D84:054508,2011

Physics

High Energy Physics

High Energy Physics - Lattice

5 pages, 7 figures, 0 tables, one reference added, work done partly under the PT-LQCD Collaboration

Scientific paper

10.1103/PhysRevD.84.054508

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.

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