TY - GEN
T1 - Expansion of a lithium gas in the BEC-BCS crossover
AU - Tarruell, L.
AU - Teichmann, M.
AU - Mckeever, J.
AU - Bourdel, T.
AU - Cubizolles, J.
AU - Navon, N.
AU - Chevy, F.
AU - Salomon, C.
AU - Khaykovich, L.
AU - Zhang, J.
PY - 2007
Y1 - 2007
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84884602206&partnerID=8YFLogxK
U2 - 10.3254/978-1-58603-846-5-845
DO - 10.3254/978-1-58603-846-5-845
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AN - SCOPUS:84884602206
SN - 9781586038465
T3 - Proceedings of the International School of Physics "Enrico Fermi"
SP - 845
EP - 855
BT - Proceedings of the International School of Physics "Enrico Fermi"
T2 - International School of Physics "Enrico Fermi": Ultra-Cold Fermi Gases
Y2 - 20 June 2006 through 30 June 2006
ER -