Condensed Matter Seminar: Mediated interactions of Bosons embedded in a Fermi gas

March 08, 2021

Prof. Cheng Chin, University of Chicago
Group seminar via Zoom
Monday, 08. March, 2021, 4pm (MEZ)


Particle exchange plays an essential role in the understanding of long-range interactions in high energy and condensed matter physics. Based on a  Bose-Einstein condensate immersed in a degenerate Fermi gas, we observe boson-boson interactions mediated by fermionic excitations, which is the spinless analog of the Ruderman-Kittel-Kasuya-Yosida (RKKY) mechanism. Such interactions result in a wealth of novel phenomena including a drastic change of the boson ground state. New experimental tools and ideas to explore the quantum mixture will be described in the talk.

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