Dimension reduction for anisotropic Bose-Einstein condensates in the   strong interaction regime
  We study the problem of dimension reduction for the three dimensional Gross-Pitaevskii equation (GPE) describing a Bose-Einstein condensate confined in a strongly anisotropic harmonic trap. Since the gas is assumed to be in a strong interaction regime, we have to analyze two combined singular limits: a semi-classical limit in the transport direction and the strong partial confinement limit in the transversal direction. We prove that both limits commute together and we provide convergence rates. The by-products of this work are approximated models in reduced dimension for the GPE, with a priori estimates of the approximation errors. 
Weizhu Bao, Loic Le Treust, Florian Mehats
math-ph cond-mat.quant-gas math.MP