Quantum phase transition in one-dimensional Bose-Einstein condensates with attractive interactions
Quantum phase transition in one-dimensional Bose-Einstein condensates with attractive interactions
Motivated by the recent development of the Feshbach technique, we studied the ground and low-lying excited states of attractive Bose-Einstein condensates on a one-dimensional ring as a function of the strength of interactions. The Gross-Pitaevskii mean-field theory predicts a quantum phase transition between a uniform condensate and a bright soliton, …