Expansion of a lithium gas in the BEC-BCS crossover

L. Tarruell, M. Teichmann, J. Mckeever, T. Bourdel, J. Cubizolles, N. Navon, F. Chevy, C. Salomon, L. Khaykovich, J. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

We present an experimental study of the time-of-fiight properties of a gas of ultracold fermions in the BEC-BCS crossover. Since interactions can be tuned by changing the value of the magnetic field, we are able to probe both non-interacting and strongly interacting behaviors. These measurements allow us to characterize the momentum distribution of the system as well as its equation of state. We also demonstrate the breakdown of superfluid hydrodynamics in the weakly attractive region of the phase diagram, probably caused by pair breaking taking place during the expansion.

Original languageEnglish
Title of host publicationProceedings of the International School of Physics "Enrico Fermi"
Subtitle of host publicationUltra-Cold Fermi Gases
Pages845-855
Number of pages11
DOIs
StatePublished - 2007
EventInternational School of Physics "Enrico Fermi": Ultra-Cold Fermi Gases - Varenna, Italy
Duration: 20 Jun 200630 Jun 2006

Publication series

NameProceedings of the International School of Physics "Enrico Fermi"
Volume164
ISSN (Print)0074-784X
ISSN (Electronic)1879-8195

Conference

ConferenceInternational School of Physics "Enrico Fermi": Ultra-Cold Fermi Gases
Country/TerritoryItaly
CityVarenna
Period20/06/0630/06/06

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