Geodesic
Sharp interface limit for two components Bose−Einstein condensates
Goldman, M.1  ; Royo-Letelier, J.2 
1 Max Planck Institute for Mathematics in the Sciences, Inselstrasse 22, 04103, Leipzig, Germany
2 Institute of Science and Technology Austria (IST Austria), Am Campus 1, 3400 Klosterneuburg, Austria
ESAIM: Control, Optimisation and Calculus of Variations, Tome 21 (2015) no. 3, pp. 603-624

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We study a double Cahn−Hilliard type functional related to the Gross−Pitaevskii energy of two-components Bose−Einstein condensates. In the case of large but same order intercomponent and intracomponent coupling strengths, we prove Γ-convergence to a perimeter minimisation functional with an inhomogeneous surface tension. We study the asymptotic behavior of the surface tension as the ratio between the intercomponent and intracomponent coupling strengths becomes very small or very large and obtain good agreement with the physical literature. We obtain as a consequence, symmetry breaking of the minimisers for the harmonic potential.

Reçu le :
DOI : 10.1051/cocv/2014040
Classification : 35Q40, 35J50, 49S05, 49Q20
Keywords: Bose-Einstein condensates, Γ-convergence, BV functions, isoperimetric problems

Goldman, M. 1 ; Royo-Letelier, J. 2

1 Max Planck Institute for Mathematics in the Sciences, Inselstrasse 22, 04103, Leipzig, Germany
2 Institute of Science and Technology Austria (IST Austria), Am Campus 1, 3400 Klosterneuburg, Austria 
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     title = {Sharp interface limit for two components {Bose\ensuremath{-}Einstein} condensates},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {603--624},
     publisher = {EDP-Sciences},
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Goldman, M.; Royo-Letelier, J. Sharp interface limit for two components Bose−Einstein condensates. ESAIM: Control, Optimisation and Calculus of Variations, Tome 21 (2015) no. 3, pp. 603-624. doi: 10.1051/cocv/2014040

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