The Quantum Hydrodynamics system in two space dimensions

Details The Quantum Hydrodynamics system in two space dimensions The Quantum Hydrodynamics system in two space dimensions

2010-11-20

arxiv.org/abs/1011.4545v1

Mathematics

Analysis of PDEs

Submitted

Scientific paper

In this paper we study global existence of weak solutions for the Quantum Hydrodynamics System in 2-D in the space of energy. We do not require any additional regularity and/or smallness assumptions on the initial data. Our approach replaces the WKB formalism with a polar decomposition theory which is not limited by the presence of vacuum regions. In this way we set up a self consistent theory, based only on particle density and current density, which does not need to define velocity fields in the nodal regions. The mathematical techniques we use in this paper are based on uniform (with respect to the approximating parameter) Strichartz estimates and the local smoothing property.

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