hal-00345084, version 1
Derivation of a two-fluids model for a Bose gas from a quantum kinetic system
(19/11/2008)
Résumé : We formally derive the hydrodynamic limit of a system modelling a bosons gas having a condensed part, made of a quantum kinetic and a Gross-Pitaevskii equation. The limit model, which is a two-fluids Euler system, is approximated by an isentropic system, which is then studied. We find in particular some conditions for the hyperbolicity, and we study the weak solutions. Numerical examples are given at the end.
- 1 :
- CNRS : UMR8553 – Ecole normale supérieure de Paris - ENS Paris
- Domaine : Mathématiques/Physique mathématique
Physique/Physique mathématique
Mathématiques/Equations aux dérivées partielles - Mots-clés : kinetic equations – Gross-Pitaevskii equation – Bose gas – hydrodynamic limit – hyperbolic system
- Commentaire : 31 pages
- Versions disponibles : v1 (09-12-2008) v2 (22-03-2009) v3 (23-03-2009)
- hal-00345084, version 1
- http://hal.archives-ouvertes.fr/hal-00345084
- oai:hal.archives-ouvertes.fr:hal-00345084
- Contributeur :
- Soumis le : Mardi 9 Décembre 2008, 10:25:54
- Dernière modification le : Mardi 9 Décembre 2008, 16:26:29



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