title: Ground-state properties of weakly bound helium-alkali trimers.
abstract: Weakly bound triatomic molecules consisting of two helium atoms and one alkali metal atom are studied by means of the diffusion Monte Carlo method. We determined the stability of4He2A,4He3HeA, and3He2A, where A is one of the alkali atoms Li, Na, K, Rb, or Cs. Some of the trimers with3He are predicted to be self-bound for the first time, but this is observed to be dependent on the He-A interaction potential model. In addition to the ground-state energy of the trimers, we determined their density, radial, and angular distributions. Many of them are spatially very extended, which qualifies them as quantum halo states.
authors.affiliation: Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia.
authors.forename: P
authors.initials: P
authors.lastname: Stipanović
authors.affiliation: Faculty of Science, University of Split, Ruđera Boškovića 33, HR-21000 Split, Croatia.
authors.forename: L
authors.initials: L
authors.lastname: Vranješ Markić
authors.affiliation: Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Ruđera Boškovića 32, HR-21000 Split, Croatia.
authors.forename: D
authors.initials: D
authors.lastname: Zarić
authors.affiliation: Departament de Física, Universitat Politècnica de Catalunya, Campus Nord B4-B5, E-08034 Barcelona, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Boronat