Ultradilute low-dimensional liquids
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We calculate the energy of one- and two-dimensional weakly interacting Bose-Bose mixtures analytically in the Bogoliubov approximation and by using the diffusion Monte Carlo technique. We show that in the case of attractive inter- and repulsive intraspecies interactions the energy per particle has a minimum at a finite density corresponding to a liquid state. We derive the Gross-Pitaevskii equation to describe droplets of such liquids and solve it analytically in the one-dimensional case.
CitationPetrov, D., Astrakharchik, G. Ultradilute low-dimensional liquids. "Physical review letters", 1 Setembre 2016, vol. 117, núm. 10, p. 1-5.