Phase separation of Bose-Einstein condensates

Abstract

The zero-temperature system of two dilute overlapping Bose-Einstein condensates is unstable against long wavelength excitations if the interaction strength between the distinguishable bosons exceeds the geometric mean of the like-boson interaction strengths. If the condensates attract each other, the instability is similar to the instability of the negative scattering length condensates. If the condensates repel, they separate spatially into condensates of equal pressure. We estimate the boundary size, surface tension and energy of the phase separated condensate system and we discuss the implications for double condensates in atomic traps.

11 pages, 1 figure

References in corpus (2)

• Spin domains in ground state spinor Bose-Einstein condensates
• The dynamics of component separation in a binary mixture of Bose-Einstein condensates

Cited by in corpus (276)

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