Strongly interacting Fermi gases

W. Bakr, L. W. Cheuk, M. J.H. Ku, J. W. Park, A. T. Sommer, S. Will, C. H. Wu, T. Yefsah, M. W. Zwierlein

Research output: Contribution to journalConference articlepeer-review

2 Scopus citations

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 23Na 40K that will feature strong dipolar interactions in their absolute ground state.

Original languageEnglish (US)
Article number01002
JournalEPJ Web of Conferences
Volume57
DOIs
StatePublished - 2013
Event23rd International Conference on Atomic Physics, ICAP 2012 - Palaiseau, France
Duration: Jul 23 2012Jul 27 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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