Nonequilibrium dynamics of the O(N) linear sigma model
| dc.creator | Michalski, Stefan | |
| dc.date | 2003-01-17 | |
| dc.date.accessioned | 2026-07-07T03:49:04Z | |
| dc.date.available | 2026-07-07T03:49:04Z | |
| dc.description | We investigate the out-of-equilibrium evolution of a classical background field and its quantum fluctuations in the scalar O(N) model with spontaneous symmetry breaking. We consider the 2-loop 2PI effective action in the Hartree approximation, i.e., including bubble resummation but without non-local contributions to the Dyson-Schwinger equation. We concentrate on the (nonequilibrium) phase structure of the model and observe a first-order transition between a spontaneously broken and a symmetric phase at low and high energy densities, respectively. So typical structures expected in thermal equilibrium are encountered in nonequilibrium dynamics even at early times before thermalization. | |
| dc.description | Based on an article published in Phys.Rev.D65, 065019 (2002) written in collaboration with Jurgen Baacke. Presented at International Workshop on Strong and Electroweak Matter (SEWM 2002), Heidelberg, Germany, 2-5 Oct 2002 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0301134 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0301134 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/42258 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Nonequilibrium dynamics of the O(N) linear sigma model | |
| dc.type | text |