Excited hybrid quark-antiquark channels are color-octet at short distance and exponentially relax to random color, with screening masses ordered B(Σ_g^+) ~ B(Π_u) < B(Π_u') ~ B(Δ_g) < B(Δ_g') < B(Σ_g^+').
Baryonic Flux in Quenched and Two-Flavor Dynamical QCD after Abelian projection
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abstract
We study the distribution of color electric flux of the three-quark system in quenched and full QCD (with N_f = 2 flavors of dynamical quarks) at zero and finite temperature. To reduce ultra-violet fluctuations, the calculations are done in the abelian projected theory fixed to the maximally abelian gauge. In the confined phase we find clear evidence for a Y--shape flux tube surrounded and formed by the solenoidal monopole current, in accordance with the dual superconductor picture of confinement. In the deconfined, high temperature phase monopoles cease to condense, and the distribution of the color electric field becomes Coulomb--like.
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Lattice QCD study of color correlations between static quarks with gluonic excitations
Excited hybrid quark-antiquark channels are color-octet at short distance and exponentially relax to random color, with screening masses ordered B(Σ_g^+) ~ B(Π_u) < B(Π_u') ~ B(Δ_g) < B(Δ_g') < B(Σ_g^+').