Chiral Lagrangians out of thermal equilibrium
| dc.creator | Nicola, Angel Gomez | |
| dc.date | 1998-09-11 | |
| dc.date.accessioned | 2026-07-07T04:04:49Z | |
| dc.date.available | 2026-07-07T04:04:49Z | |
| dc.description | We extend Chiral Perturbation Theory to study a meson gas out of thermal equilibrium. We assume that the system is initially in equilibrium at a temperature below the phase transition and work within a Schwinger-Keldysh contour technique. To lowest order and in the chiral limit, our model is a nonlinear sigma model with a time-dependent pion decay function (PDF), which we consistently define in terms of the axial current two-point correlator. As a first application, we analyse the PDF up to one loop and find the initial temperature dependence of the lowest order coefficients in the short-time expansion. We discuss the applicability of our approach to the time evolution of the plasma formed after a RHIC and discuss the interpretation of our model in a curved space-time background context. | |
| dc.description | 10 pages RevTex, Proceedings of the 5th International Workshop on Thermal Field Theories and their application, Regensburg, Germany, August 10-14, 1998 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9809342 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9809342 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48252 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Chiral Lagrangians out of thermal equilibrium | |
| dc.type | text |