Thursday, January 17, 2013

1301.3619 (G. Burgio et al.)

Lattice Coulomb propagators, effective energy and confinement    [PDF]

G. Burgio, M. Quandt, H. Reinhardt, M. Schröck
We show that in the lattice Hamiltonian limit all Coulomb gauge propagators are consistent with the Gribov-Zwanziger confinement mechanism, with an IR enhanced effective energy for quarks and gluons and a diverging ghost form factor compatible with a dual-superconducting vacuum. Multiplicative renormalizability is ensured for all static correlators, while for non-static ones their energy dependence plays a crucial role in this respect. Moreover, from the Coulomb potential we can extract the Coulomb string tension \sigma_C ~ 2 \sigma.
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