2019/12/16 by Eberhard Tiemann, Philipp Gersema, Kai K. Voges +3
Physics and Astronomy · #physics.atom-ph #cond-mat.quant-gas
paper · pdf · doi:10.1103/physrevresearch.2.013366
published as Phys. Rev. Research 2, 013366 (2020)
arxiv created 2019/12/16 · arxiv updated 2020/04/01
We report on deviations beyond the Born-Oppenheimer approximation in the potassium inter-atomic potentials. Identifying three up-to-now unknown d-wave Feshbach resonances, we significantly improve the understanding of the 39K inter-atomic potentials. Combining these observations with the most recent data on known inter- and intra-isotope Feshbach resonances, we show that Born-Oppenheimer corrections can be determined from atomic collisional properties alone and that significant differences between the homo- and heteronuclear case appear.