Renormalization of self-consistent $Φ$-derivable approximations
| dc.creator | van Hees, H. | |
| dc.creator | Knoll, J. | |
| dc.date | 2002-10-18 | |
| dc.date | 2002-11-04 | |
| dc.date.accessioned | 2026-07-07T03:48:15Z | |
| dc.date.available | 2026-07-07T03:48:15Z | |
| dc.description | Within finite temperature field theory, we show that truncated non-perturbative self-consistent Dyson resummation schemes can be renormalized with local vacuum counterterms. For this the theory has to be renormalizable in the usual sense and the self-consistent scheme must follow Baym's Phi-derivable concept. Our BPHZ-renormalization scheme leads to renormalized self-consistent equations of motion. At the same time the corresponding 2PI-generating functional and the thermodynamic potential can be renormalized with the same counterterms used for the equations of motion. This guarantees the standard Phi-derivable properties like thermodynamic consistency and exact conservation laws also for the renormalized approximation schemes. We give also a short overview over symmetry properties of the various functions defined within the 2PI scheme for the case that the underlying classical field theory has a global linearly realized symmetry. | |
| dc.description | 16 pages, LaTeX using ws-procs9x6.cls (included)<br> To appear in the proceedings of the workshop "Progress in Nonequilibrium Greens Functions, Dresden, Germany, 19.-22. August 2002" 2nd Version: Added a section "Conclusions and outlooks" (physics contents unchanged) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0210262 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0210262 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/41938 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Renormalization of self-consistent $Φ$-derivable approximations | |
| dc.type | text |