We compute the color fields of SU(3) lattice QCD created by static pentaquark systems, in a ${24}^3\times 48$ lattice at $\beta =6.2$ corresponding to a lattice spacing $a=0.07261(85)\mathrm{fm}$. We find that the pentaquark color 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 the 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.

• Received 7 September 2012

DOI:https://doi.org/10.1103/PhysRevD.87.034504