Resolving the instability of the Savvidy vacuum by dynamical gluon mass
| dc.creator | Vercauteren, David | |
| dc.creator | Verschelde, Henri | |
| dc.date | 2007-12-04 | |
| dc.date.accessioned | 2026-07-07T11:13:34Z | |
| dc.date.available | 2026-07-07T11:13:34Z | |
| dc.description | In this paper we apply the formalism of local composite operators as developed by Verschelde et al. in combination with a constant chromomagnetic field as considered in the seventies by Savvidy and others. We find that a nonzero <A_μ^2> minimizes the vacuum energy, as in the case with no chromomagnetic field, and that the chromomagnetic field itself is near-to zero. The Nielsen-Olesen instability, caused by the imaginary part in the action, also vanishes. We further investigate the effect of an external chromomagnetic field on the value of <A_μ^2>, finding that this condensate is destroyed by sufficiently strong fields. The inverse scenario, where <A_μ^2> is considered as external, results in analogous findings: when this condensate is sufficiently large, the induced chromomagnetic field is lowered to a perturbative value slightly below the applied <A_μ^2>. | |
| dc.description | 11 pages, 8 figures | |
| dc.identifier | https://arxiv.org/abs/0712.0570 | |
| dc.identifier | http://arxiv.org/abs/0712.0570 | |
| dc.identifier | Phys.Lett.B660:432-438,2008 | |
| dc.identifier | doi:10.1016/j.physletb.2008.01.013 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/191762 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Resolving the instability of the Savvidy vacuum by dynamical gluon mass | |
| dc.type | text |