Ara es mostren els items 53-58 de 58

    • Ultradilute low-dimensional liquids 

      Petrov, D. S.; Astrakharchik, Grigori (2016-09-01)
      Article
      Accés obert
      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 ...
    • Ultradilute quantum liquid of dipolar atoms in a bilayer 

      Guijarro Gámez, Grecia; Astrakharchik, Grigori; Boronat Medico, Jordi (American Institute of Physics (AIP), 2022-02-11)
      Article
      Accés obert
      We show that ultradilute quantum liquids can be formed with ultracold bosonic dipolar atoms in a bilayer geometry. Contrary to previous realizations of ultradilute liquids, there is no need for stabilizing the system with ...
    • Universal dimerized quantum droplets in a one-dimensional lattice 

      Morera Navarro, Iván; Astrakharchik, Grigori; Polls Martí, Artur; Julia Diaz, Bruno (American Institute of Physics (AIP), 2021-01-11)
      Article
      Accés obert
      The ground-state properties of two-component bosonic mixtures in a one-dimensional optical lattice are studied both from few- and many-body perspectives. We rely directly on a microscopic Hamiltonian with attractive ...
    • Universal properties of anisotropic dipolar bosons in two dimensions 

      Sánchez Baena, Juan; Peña Ardila, Luis Aldemar; Astrakharchik, Grigori; Mazzanti Castrillejo, Fernando Pablo (2022-08-25)
      Article
      Accés obert
      The energy of ultra-dilute quantum many-body systems is known to exhibit a universal dependence on the gas parameter x = n a d 0 , with n the density, d the dimensionality of the space ( d = 1 , 2 , 3 ) and a 0 the s -wave ...
    • Universality in ultradilute liquid Bose-Bose mixtures 

      Cikojevic, V.; Vranješ Markic, Leandra; Astrakharchik, Grigori; Boronat Medico, Jordi (American Physical Society (APS), 2019-02-13)
      Article
      Accés obert
      We have studied dilute Bose-Bose mixtures of atoms with attractive interspecies and repulsive intraspecies interactions using quantum Monte Carlo methods at T=0. Using a number of models for interactions, we determine the ...
    • Zero-temperature phase diagram of Yukawa bosons 

      Osychenko, O.N.; Astrakharchik, Grigori; Mazzanti Castrillejo, Fernando Pablo; Boronat Medico, Jordi (2012)
      Article
      Accés obert
      We study the zero-temperature phase diagram of bosons interacting via screened Coulomb (Yukawa) potential by means of the diffusion Monte Carlo method. The Yukawa potential is used as a model interaction in the neutron ...