title: Four-component relativistic coupled cluster and configuration interaction calculations on the ground and excited states of the RbYb molecule.
abstract: We present high-level four-component coupled cluster and multireference configuration interaction calculations of potential energy curves, dipole moment, Franck-Condon factors and spectroscopic constants of the newly formed RbYb molecule. From finite-field calculations we obtain an electric dipole moment for RbYb of almost 1 D. In combination with its magnetic dipole moment this makes RbYb an excellent candidate for trapping and for studying dipolar interaction in the ultracold regime. Significant Franck-Condon factors are found between the rovibronic ground state and the lowest rovibrational levels of the first excited 2Sigma1/2+ state but also between a broad range of rovibrational levels of the 2Pi1/2 and 2Pi3/2 states. This allows for several two-step approaches to reach the rovibronic ground state after initial photoassociation.
authors.affiliation: Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Germany.
authors.forename: Lasse Kragh
authors.initials: LK
authors.lastname: Sørensen
authors.forename: Stefan
authors.initials: S
authors.lastname: Knecht
authors.forename: Timo
authors.initials: T
authors.lastname: Fleig
authors.forename: Christel M
authors.initials: CM
authors.lastname: Marian