Color fields computed in SU(3) lattice QCD for the static tetraquark system
Abstract
The color fields created by the static tetraquark system are computed in quenched SU(3) lattice QCD, in a 243×48 lattice at β=6.2 corresponding to a lattice spacing a=0.07261(85)fm. We find that the tetraquark color 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.
- Publication:
-
Physical Review D
- Pub Date:
- September 2011
- DOI:
- 10.1103/PhysRevD.84.054508
- arXiv:
- arXiv:1107.1355
- Bibcode:
- 2011PhRvD..84e4508C
- Keywords:
-
- 12.38.Gc;
- 11.15.Ha;
- 14.40.Rt;
- Lattice QCD calculations;
- Lattice gauge theory;
- High Energy Physics - Lattice;
- High Energy Physics - Phenomenology
- E-Print:
- 5 pages, 7 figures, 0 tables, one reference added, work done partly under the PT-LQCD Collaboration