207 citations · 1k across the 14 of their papers we have counts for
14 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…
Role of the intraspecies scattering length in the Efimov scenario with large mass difference
Stephan Häfner, Juris Ulmanis, Eva D. Kuhnle +3
We experimentally and theoretically study the effect of the intraspecies scattering length onto the heteronuclear Efimov scenario, following up on our earlier observation of Efimov…
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…