TY - JOUR

T1 - Beyond Born-Oppenheimer approximation in ultracold atomic collisions

AU - Tiemann, Eberhard

AU - Gersema, Philipp

AU - Voges, Kai K.

AU - Hartmann, Torsten

AU - Zenesini, Alessandro

AU - Ospelkaus-Schwarzer, Silke

PY - 2020/3/26

Y1 - 2020/3/26

N2 - 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 $^{39}$K 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.

AB - 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 $^{39}$K 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.

KW - physics.atom-ph

KW - cond-mat.quant-gas

UR - http://www.scopus.com/inward/record.url?scp=85108128465&partnerID=8YFLogxK

U2 - 10.1103/PhysRevResearch.2.013366

DO - 10.1103/PhysRevResearch.2.013366

M3 - Article

VL - 2

JO - Physical Review Research

JF - Physical Review Research

SN - 2643-1564

IS - 1

M1 - 013366

ER -