Bulletin of the American Physical Society
55th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics
Monday–Friday, June 3–7, 2024; Fort Worth, Texas
Session Y02: HOT TOPICS
10:30 AM–12:30 PM,
Friday, June 7, 2024
Room: Ballroom C
Chair: Gretchen Campbell, Joint Quantum Institute, NIST and UMD
Abstract: Y02.00001 : Do Fermions mediate pairing of bosons?
10:30 AM–11:00 AM
Presenter:
Cheng Chin
(University of Chicago)
Author:
Cheng Chin
(University of Chicago)
We perform experiments on a degenerate mixture of heavy bosons (Cs) embedded in light fermions (Li) with tunable interspecies interactions. Weak interactions between Cs atoms mediated by Li atoms show consistency with the RKKY mechanism, while Efimov trimers manifest in the strong coupling regime. How are the 2 physics mingled in the crossover regime? We present measurements on the Bose-Fermi mixture across the weak- to strong-coupling regime, which revealed more surprises, including the collapsing and revival of phonon modes.
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