4,090 research outputs found
SU(3) quark-antiquark QCD flux tube
We compute the quark-antiquark flux tube for pure gauge SU(3) in space-time 3
+ 1 dimensions. To increase the signal over noise ratio, we apply the improved
multihit and extended smearing techniques. We fit the field densities with an
appropriate ansatz and we observe both the screening of the color fields and
the quantum widening of the flux tube in the mediator plane and in the charge
planes.Comment: 7 pages, 8 figures, poster presented at the 31st International
Symposium on Lattice Field Theory, July 29 - August 3, 2013, Mainz, German
Colour Fields of the Static Pentaquark System Computed in SU(3) Lattice QCD
We compute the colour fields of SU(3) lattice QCD created by static
pentaquark systems, in a lattice at corresponding
to a lattice spacing fm. We find that the pentaquark colour
fields are well described by a multi-Y-type shaped flux tube. The flux tube
junction points are compatible with Fermat-Steiner points minimizing the total
flux tube length. We also compare the pentaquark flux tube profile with
diquark-diantiquark central flux tube profile in the tetraquark and the
quark-antiquark fundamental flux tube profile in the meson, and they match,
thus showing that the pentaquark flux tubes are composed of fundamental flux
tubes.Comment: 7 pages, 6 figures, 2 table
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