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arXiv · 1107.1355

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

N. Cardoso·M. Cardoso·P. Bicudo
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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.

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N. Cardoso, M. Cardoso, P. Bicudo. 2011-09-02. Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System. https://doi.org/10.1103/physrevd.84.054508

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