Beyond Born-Oppenheimer approximation in ultracold atomic collisions

Abstract

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.

References in corpus (18)

• Feshbach Resonances in Ultracold Gases
• Observation of resonance condensation of fermionic atom pairs
• Tuning p-wave interactions in an ultracold Fermi gas of atoms
• Measurement of positive and negative scattering lengths in a Fermi gas of atoms
• Three-body recombination at large scattering lengths in an ultracold atomic gas
• Multiplet Structure of Feshbach Resonances in non-zero partial waves
• Feshbach resonances in ultracold K(39)
• Sticky collisions of ultracold RbCs molecules
• Strongly Interacting Isotopic Bose-Fermi Mixture Immersed in a Fermi Sea
• Potassium ground state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy
• Feshbach resonances in potassium Bose-Bose mixtures
• Feshbach spectroscopy and dual-species Bose-Einstein condensation of ${}^{23}\mathrm{Na}-$${}^{39}\mathrm{K}$ mixtures
• Spectroscopy of the a^3Σ_u^+ state and the coupling to the X^1Σ_g^+ state of K_2
• Observation of dipolar splittings in high-resolution atom-loss spectroscopy of ${}^6$Li $p$-wave Feshbach resonances
• Production of large ${}^{41}$K Bose-Einstein condensates using D1 gray molasses
• Feshbach resonances in ${}^{23}\mathrm{Na}+$${}^{39}\mathrm{K}$ mixtures and refined molecular potentials for the NaK molecule
• Feshbach spectroscopy of an ultracold ${}^{41}$K-${}^6$Li mixture and ${}^{41}$K atoms
• Quantitative analysis of losses close to a d-wave open-channel Feshbach resonance in Potassium 39

Cited by in corpus (14)

• Tunable three-body interactions in driven two-component Bose-Einstein condensates
• Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
• Pinpointing Feshbach Resonances and Testing Efimov Universalities in ${}^{39}$K
• Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms
• A high-flux source system for matter-wave interferometry exploiting tunable interactions
• Three-body spin mixing in spin-1 Bose-Einstein condensates
• Rapid generation of all-optical ${}^{39}$K Bose-Einstein condensates using a low-field Feshbach resonance
• Interaction potential for NaCs for ultracold scattering and spectroscopy
• Spin hierarchy in van der Waals molecule formation via ultracold three-body recombination
• Spin structure of diatomic van der Waals molecules of alkali atoms
• Observation of high partial-wave Feshbach resonances in ${}^{39}$K Bose-Einstein condensates
• Formation of ultracold ${}^{39}$K${}^{133}$Cs Feshbach molecules
• Beyond-mean-field effects in Rabi-coupled two-component Bose-Einstein condensate
• Tweezer interferometry with NOON states