Self-Bound Quantum Droplets of Atomic Mixtures in Free Space.

@article{Semeghini2018SelfBoundQD,
  title={Self-Bound Quantum Droplets of Atomic Mixtures in Free Space.},
  author={G. Semeghini and Giovanni Ferioli and Leonardo Masi and Chiara Mazzinghi and L. Wolswijk and Francesco Minardi and Michele Modugno and Giovanni Modugno and Massimo Inguscio and Marco Fattori},
  journal={Physical review letters},
  year={2018},
  volume={120 23},
  pages={
          235301
        }
}
Self-bound quantum droplets are a newly discovered phase in the context of ultracold atoms. In this Letter, we report their experimental realization following the original proposal by Petrov [Phys. Rev. Lett. 115, 155302 (2015)PRLTAO0031-900710.1103/PhysRevLett.115.155302], using an attractive bosonic mixture. In this system, spherical droplets form due to the balance of competing attractive and repulsive forces, provided by the mean-field energy close to the collapse threshold and the first… 

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