Publicação: Liquid-gas phase transition in Bose-Einstein condensates with time evolution
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2000-05-01
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We study the effects of a repulsive three-body interaction on a system of trapped ultracold atoms in a Bose-Einstein condensed state. The stationary solutions of the corresponding s-wave nonlinear Schrödinger equation suggest a scenario of first-order liquid-gas phase transition in the condensed state up to a critical strength of the effective three-body force. The time evolution of the condensate with feeding process and three-body recombination losses has a different characteristic pattern. Also, the decay time of the dense (liquid) phase is longer than expected due to strong oscillations of the mean-squared radius.
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Physical Review A - Atomic, Molecular, and Optical Physics, v. 61, n. 5, p. 516021-516024, 2000.
