arXiv subjects

M. Wouters

Publications and source records attributed to M. Wouters.

38 records · Page 3Linked to original sources

arXiv2003

Resonant dynamics in boson-fermion mixtures

The time evolution of a dilute atomic boson-fermion mixture is studied at zero temperature, when the external magnetic field is brought close to a interspecies Feshbach resonance. On short time scales we find that before a collapse or phase separation of the mixture can occur, oscillations between fermionic atoms and heteronuclear molecules dominate the dynamics. Applying the model presented here to a trapped mixture of $^{40}$K-$^{87}$Rb atoms, we find that the predicted oscillations can be revealed in degenerate mixtures of these atoms.

cond-mat↗

arXiv2003

Three-Fluid Description of the Sympathetic Cooling of a Boson-Fermion Mixture

We present a model for sympathetic cooling of a mixture of fermionic and bosonic atomic gases in harmonic traps, based on a three-fluid description. The model confirms the experimentally observed cooling limit of about 0.2 T_F when only bosons are pumped. We propose sequential cooling -- first pumping of bosons and afterwards fermions -- as a way to obtain lower temperatures. For this scheme, our model predicts that temperatures less than 0.1 T_F can be reached.

cond-mat↗