Strongly interacting Fermi gases
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Zwierlein_Strongly interacting.pdf
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659.06 KB
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Author(s)
Bakr, Waseem S.
Sommer, A.T.
Wu, C.-H.
Cheuk, Lawrence W.
Ku, Mark Jen-Hao
Park, Jee Woo
Will, Sebastian
Yefsah, Tarik
Zwierlein, Martin Wolfram
Date Issued
August 2013
Journal
EPJ Web of Conferences
Publisher
EDP Sciences
Citation
Bakr, W., et al. "Strongly interacting Fermi gases." EPJ Web of Conferences 57, 01002 (2013).
Version
Final published version
Abstract
Strongly interacting gases of ultracold fermions have become an amazingly rich test-bed for many-body theories of fermionic matter. Here we present our recent experiments on these systems. Firstly, we discuss high-precision measurements on the thermodynamics of a strongly interacting Fermi gas across the superfluid transition. The onset of superfluidity is directly observed in the compressibility, the chemical potential, the entropy, and the heat capacity. Our measurements provide benchmarks for current many-body theories on strongly interacting fermions. Secondly, we have studied the evolution of fermion pairing from three to two dimensions in these gases, relating to the physics of layered superconductors. In the presence of p-wave interactions, Fermi gases are predicted to display toplogical superfluidity carrying Majorana edge states. Two possible avenues in this direction are discussed, our creation and direct observation of spin-orbit coupling in Fermi gases and the creation of fermionic molecules of [superscript 23]Na [superscript 40]K that will feature strong dipolar interactions in their absolute ground state.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Research Laboratory of Electronics
MIT-Harvard Center for Ultracold Atoms
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Creative Commons Attribution
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DOI of Published Version
https://doi.org/10.1051/epjconf/20135701002
