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Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System
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Colour Fields Computed in SU(3) Lattice QCD for the Static Tetraquark System
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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.
Forward citations
Cited by 1 Pith paper
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Lattice QCD study of color correlations between quarks in static multiquark systems
Color correlations of quark pairs in static 2Q, 3Q, and 4Q systems all decay along the same universal curve when plotted against the assumed flux-tube path length, approaching random color at large separation.
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