Observation of "broad" d-wave Feshbach resonances with a triplet structure
Abstract
High partial-wave () Feshbach resonance (FR) in an ultracold mixture of Rb-Rb atoms is investigated experimentally aided by a partial-wave insensitive analytic multichannel quantum-defect theory (MQDT). Two "broad" resonances from coupling between d-waves in both the open and closed channels are observed and characterized. One of them shows a fully resolved triplet structure with splitting ratio well explained by the perturbation to the closed channel due to interatomic spin-spin interaction. These tunable "broad" d-wave resonances, especially the one in the lowest-energy open channel, could find important applications in simulating d-wave coupling dominated many-body systems. In addition, we find that there is generally a time and temperature requirement, associated with tunneling through the angular momentum barrier, to establish and observe resonant coupling in nonzero partial waves.
Keywords
Cite
@article{arxiv.1709.08794,
title = {Observation of "broad" d-wave Feshbach resonances with a triplet structure},
author = {Yue Cui and Chuyang Shen and Min Deng and Shen Dong and Cheng Chen and Rong Lü and Bo Gao and Meng Khoon Tey and Li You},
journal= {arXiv preprint arXiv:1709.08794},
year = {2017}
}
Comments
5 pages, 3 figures