Kinetic equations for Bose-Einstein condensates from the 2PI effective action
| dc.creator | Baier, R. | |
| dc.creator | Stockamp, T. | |
| dc.date | 2004-12-21 | |
| dc.date | 2005-01-31 | |
| dc.date.accessioned | 2026-07-07T03:54:08Z | |
| dc.date.available | 2026-07-07T03:54:08Z | |
| dc.description | We use the 2PI effective action of a relativistic scalar field theory to derive kinetic equations for a Bose-condensed system near the phase transition.We start from equations of motion derived within a 1/N-expansion at NLO. In taking the non-relativistic limit we obtain a generalized Gross-Pitaevskii equation for the condensate field. Within the Popov approximation we explicitly compute the collision term up to order g^2 using the Kadanoff-Baym formalism. For the sake of self-consistency we derive in the same way a Boltzmann equation for the non-condensate distribution function. The final results are in agreement to those previously obtained by Griffin, Nikuni and Zaremba and by Stoof. | |
| dc.description | 11 pages, 2 figures; minor changes, references added | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0412310 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0412310 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/44115 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Statistical Mechanics | |
| dc.title | Kinetic equations for Bose-Einstein condensates from the 2PI effective action | |
| dc.type | text |