Article Contents
Article Contents

# Derivation of a two-fluids model for a Bose gas from a quantum kinetic system

• 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. A numerical example is given at the end.
Mathematics Subject Classification: Primary: 76Y05; Secondary: 82C40, 82D50.

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