Gribov copies and anomalous scaling
| dc.creator | Holdom, B. | |
| dc.date | 2007-12-14 | |
| dc.date | 2009-01-05 | |
| dc.date.accessioned | 2026-07-07T12:29:56Z | |
| dc.date.available | 2026-07-07T12:29:56Z | |
| dc.description | Nonperturbative and lattice methods indicate that Gribov copies modify the infrared behavior of gauge theories and cause a suppression of gluon propagation. We investigate whether this can be implemented in a modified perturbation theory. The minimal modification proceeds via a nonlocal generalization of the Fadeev-Popov ghost that automatically decouples from physical states. The expected scale invariance of the physics associated with Gribov copies leads to the emergence of a nontrivial infrared fixed point. For a range of a scaling exponent the gauge bosons exhibit unparticlelike behavior in the infrared. The confining regime of interest for QCD requires a larger scaling exponent, but then the severity of ghost dominance upsets naive power counting for the infrared scaling behavior of amplitudes. | |
| dc.description | 14 pages, 2 figures, published version | |
| dc.identifier | https://arxiv.org/abs/0712.2379 | |
| dc.identifier | http://arxiv.org/abs/0712.2379 | |
| dc.identifier | Phys.Rev.D78:125030,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.125030 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215997 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Gribov copies and anomalous scaling | |
| dc.type | text |