203 citations · 463 across the 8 of their papers we have counts for
8 papers
An experimental platform for studying the heteronuclear Efimov effect with an ultracold mixture of Li and Cs atoms
Eleonora Lippi, Manuel Gerken, Stephan Häfner +10
We present the experimental apparatus enabling the observation of the heteronuclear Efimov effect in an optically trapped ultracold mixture of Li-Cs with high-resolutio…
Heteronuclear Efimov scenario with positive intraspecies scattering length
Juris Ulmanis, Stephan Häfner, Rico Pires +4
We investigate theoretically and experimentally the heteronuclear Efimov scenario for a three-body system that consists of two bosons and one distinguishable particle with positive…
Universal three-body recombination and Efimov resonances in an ultracold Li-Cs mixture
J. Ulmanis, S. Häfner, R. Pires +4
We study Efimov resonances via three-body loss in an ultracold two-component gas of fermionic Li and bosonic Cs atoms close to a Feshbach resonance at 843~G, extending…
Universality of weakly bound dimers and Efimov trimers close to Li-Cs Feshbach resonances
J. Ulmanis, S. Häfner, R. Pires +3
We study the interspecies scattering properties of ultracold Li-Cs mixtures in their two energetically lowest spin channels in the magnetic field range between 800 G and 1000 G. Cl…
Analyzing Feshbach resonances -- A Li -Cs case study
Rico Pires, Marc Repp, Juris Ulmanis +7
We provide a comprehensive comparison of a coupled channels calculation, the asymptotic bound state model (ABM), and the multichannel quantum defect theory (MQDT). Quantitative res…
Observation of Efimov Resonances in a Mixture with Extreme Mass Imbalance
R. Pires, J. Ulmanis, S. Häfner +4
We observe two consecutive heteronuclear Efimov resonances in an ultracold Li-Cs mixture by measuring three-body loss coefficients as a function of magnetic field near a Feshbach r…
Observation of interspecies Li-Cs Feshbach resonances
M. Repp, R. Pires, J. Ulmanis +4
We report on the observation of nineteen interspecies Feshbach resonances in an optically trapped ultracold Bose-Fermi mixture of ^{133}Cs and ^{6}Li in the two energetically lowes…
Upper Limit on the Magnetic Dipole Contribution to the 5p-8p Transition in Rb by Use of Ultracold Atom Spectroscopy
R. Pires, M. Ascoli, E. E. Eyler +2
We report on hyperfine-resolved spectroscopic measurements of the electric-dipole forbidden 5 transition in a sample of ultracold Rb atoms. The hyperfi…