2 papers
physics.atom-ph2026
Large anomalous shifts of potassium-39 Feshbach resonances
Ali Zaheer, Mohammed Bouras, Krzysztof Giergiel +3
We report the observation of large anomalous shifts, up to +7.5 G, of the positions of the 33.6 G and 39.9 G Feshbach resonances in potassium-39 atoms confined in a 1063.9 nm optic…
cond-mat.quant-gas2020
Creating big time crystals with ultracold atoms
Krzysztof Giergiel, Tien Tran, Ali Zaheer +4
We investigate the size of discrete time crystals s (ratio of response period to driving period) that can be created for a Bose-Einstein condensate (BEC) bouncing resonantly on an…