Collective dynamics of Fermi-Bose mixtures with an oscillating scattering length
F. Kh. AbdullaevCCNH, Universidade Federal do ABC, 09210-170, Santo André, BrazilMagnus ÖgrenNano Science Center, Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100 København Ø, DenmarkMads Peter SørensenDepartment of Applied Mathematics and Computer Science, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
ABI
Аннотация
Collective oscillations of superfluid mixtures of ultracold fermionic and bosonic atoms are investigated while varying the fermion-boson scattering length. We study the dynamics with respect to excited center of mass modes and breathing modes in the mixture. Parametric resonances are also analyzed when the scattering length varies periodically in time, by comparing partial differential equation models and ordinary differential equation models for the dynamics. An application to the recent experiment with fermionic $^{6}\mathrm{Li}$ and bosonic $^{7}\mathrm{Li}$ atoms, which approximately have the same masses, is discussed.
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