Speaker
Bicudo Pedro
(Instituto Superior Técnico, Lisboa)
Description
The interpretation of the Landau gauge lattice gluon propagator as a massive type bosonic propagator is investigated. This is relevant for the analytical studies of the Landau gauge gluon propagator, since in Lattice QCD we are able to also compute the non-pertubative infrared gluon mass and compute how it matches with the ultraviolet region addressed in pertubative QCD.
Our analysis suggests a running gluon mass, decreasing with
the momentum, starting from a value of $\sim 630$ MeV in the infrared region and suggesting a simple $q^2 \ln q^2$ dependence for momenta above 1 GeV.
Our data and our best fit are also compatible with the perturbative behaviour in the right momentum region.
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Primary author
Orlando Oliveira
(Dep Física, Universidade de Coimbra, 3004-516 Coimbra, Portugal)
Co-author
Bicudo Pedro
(Instituto Superior Técnico, Lisboa)
