Metastability versus collapse following a quench in attractive Bose-Einstein condensates

@article{Golde2018MetastabilityVC,
  title={Metastability versus collapse following a quench in attractive Bose-Einstein condensates},
  author={Jacob Golde and Joanna Ruhl and SUMITA Datta and Boris A. Malomed and Maxim Olshanii and Vanja Dunjko},
  journal={Physical Review A},
  year={2018},
  volume={97},
  pages={053604}
}
We consider a Bose-Einstein condensate (BEC) with attractive two-body interactions in a cigar-shaped trap, initially prepared in its ground state for a given negative scattering length, which is quenched to a larger absolute value of the scattering length. Using the mean-field approximation, we compute numerically, for an experimentally relevant range of aspect ratios and initial strengths of the coupling, two critical values of quench: one corresponds to the weakest attraction strength the… 

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