Infrared-suppressed gluon propagator in 4d Yang-Mills theory in a Landau-like gauge
| dc.creator | Cucchieri, Attilio | |
| dc.creator | Maas, Axel | |
| dc.creator | Mendes, Tereza | |
| dc.date | 2007-01-15 | |
| dc.date | 2007-08-10 | |
| dc.date.accessioned | 2026-07-07T11:22:04Z | |
| dc.date.available | 2026-07-07T11:22:04Z | |
| dc.description | The infrared behavior of the gluon propagator is directly related to confinement in QCD. Indeed, the Gribov-Zwanziger scenario of confinement predicts an infrared vanishing (transverse) gluon propagator in Landau-like gauges, implying violation of reflection positivity and gluon confinement. Finite-volume effects make it very difficult to observe (in the minimal Landau gauge) an infrared suppressed gluon propagator in lattice simulations of the four-dimensional case. Here we report results for the SU(2) gluon propagator in a gauge that interpolates between the minimal Landau gauge (for gauge parameter lambda equal to 1) and the minimal Coulomb gauge (corresponding to lambda = 0). For small values of lambda we find that the spatially-transverse gluon propagator D^tr(0,|\vec p|), considered as a function of the spatial momenta |\vec p|, is clearly infrared suppressed. This result is in agreement with the Gribov-Zwanziger scenario and with previous numerical results in the minimal Coulomb gauge. We also discuss the nature of the limit lambda -> 0 (complete Coulomb gauge) and its relation to the standard Coulomb gauge (lambda = 0). Our findings are corroborated by similar results in the three-dimensional case, where the infrared suppression is observed for all considered values of lambda. | |
| dc.description | 5 pages, 2 figures, one figure with additional results and extended discussion of some aspects of the results added and some minor clarifications. In v3: Various small changes and additions | |
| dc.identifier | https://arxiv.org/abs/hep-lat/0701011 | |
| dc.identifier | http://arxiv.org/abs/hep-lat/0701011 | |
| dc.identifier | Mod.Phys.Lett.A22:2429-2438,2007 | |
| dc.identifier | doi:10.1142/S0217732307024450 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/194448 | |
| dc.subject | High Energy Physics - Lattice | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Infrared-suppressed gluon propagator in 4d Yang-Mills theory in a Landau-like gauge | |
| dc.type | text |