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• W1991231379 abstract "We treat the behavior of Bose-Einstein condensates in double square well potentials of both equal and different depths. For even depth, symmetry preserving solutions to the relevant nonlinear Schrodinger equation are known, just as in the linear limit. When the nonlinearity is strong enough, symmetry breaking solutions also exist, side by side with the symmetric one. Interestingly, solutions almost entirely localized in one of the wells are known as an extreme case. Here we outline a method for obtaining all these solutions for repulsive interactions. The bifurcation point at which, for critical nonlinearity, the asymmetric solutions branch off from the symmetry preserving ones is found analytically. We also find this bifurcation point and treat the solutions generally via a Josephson junction model. When the confining potential is in the form of two wells of different depth, interesting phenomena appear. This is true of both the occurrence of the bifurcation point for the static solutions and also of the dynamics of phase and amplitude varying solutions. Again a generalization of the Josephson model proves useful. The stability of solutions is treated briefly." @default.
• W1991231379 created "2016-06-24" @default.
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• W1991231379 date "2006-08-31" @default.
• W1991231379 modified "2023-10-16" @default.
• W1991231379 title "Statics and dynamics of Bose-Einstein condensates in double square well potentials" @default.
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• W1991231379 doi "https://doi.org/10.1103/physreve.74.026610" @default.
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