2026-04-14T04:16:06Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/1222722026-01-21T04:32:25Zcom_2072_1033col_2072_452950

One-dimensional three-boson problem with two- and three-body interactions Guijarro Gámez, Grecia Pricoupenko, A. Astrakharchik, Grigori Boronat Medico, Jordi Petrov, D. S. Universitat Politècnica de Catalunya. Departament de Física Universitat Politècnica de Catalunya. SIMCON - First-principles approaches to condensed matter physics: quantum effects and complexity Àrees temàtiques de la UPC::Física Monte Carlo method Bosons Bosons Montecarlo, Mètode de We solve the three-boson problem with contact two- and three-body interactions in one dimension and analytically calculate the ground and excited trimer-state energies. Then, by using the diffusion Monte Carlo technique, we calculate the binding energy of three dimers formed in a one-dimensional Bose-Bose or Fermi-Bose mixture with attractive interspecies and repulsive intraspecies interactions. Combining these results with our three-body analytics, we extract the three-dimer scattering length close to the dimer-dimer zero crossing. In both considered cases, the three-dimer interaction turns out to be repulsive. Our results constitute a concrete proposal for obtaining a one-dimensional gas with a pure three-body repulsion. Peer Reviewed Postprint (published version) 2018-06-14 Article Guijarro, G., Pricoupenko, A., Astrakharchik, G., Boronat, J., Petrov, D. One-dimensional three-boson problem with two- and three-body interactions. "Physical review A", 14 Juny 2018, vol. 97, p. 061605-1-061605-5. 2469-9926 https://hdl.handle.net/2117/122272 10.1103/PhysRevA.97.061605 eng https://journals.aps.org/pra/abstract/10.1103/PhysRevA.97.061605 http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access Attribution-NonCommercial-NoDerivs 3.0 Spain application/pdf American Physical Society (APS)