Lattice QCD density-density correlations provide the first gauge-invariant spatial portraits of 1S, 1P, and exotic charmoniumlike states, showing relativistic radial structures and an S-wave color-octet c cbar plus gluonic component for the 1-+ hybrid.
Pion wave function from lattice QCD vs. chiral quark models
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abstract
We analyze the equal-time Bethe-Salpeter quark wave function of the pion obtained from a quenched lattice QCD calculation with delocalized quark interpolators. We find that the result agrees remarkably well with the predictions of the Nambu--Jona-Lasinio model in all channels. We choose the quenched lattice QCD, since it is closer to the large-Nc limit of the Nambu--Jona-Lasinio model. We also show how transversity information, relevant for the light-cone physics, can be obtained from our equal-time rest-frame lattice calculations.
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Portraits of Charmoniumlike States
Lattice QCD density-density correlations provide the first gauge-invariant spatial portraits of 1S, 1P, and exotic charmoniumlike states, showing relativistic radial structures and an S-wave color-octet c cbar plus gluonic component for the 1-+ hybrid.