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We study the transition to fermion pair superfluidity in a mixture of interacting ultracold bosonic and fermionic atoms. The nonperturbative Hamiltonian flow equations give us access to the full momentum dependence of the induced fermion interaction also away from the Fermi surface. We determine the bosonic spectrum near the transition towards phase separation and find that the superfluid transition temperature may be increased substantially due to dynamical screening of condensate phonons. |
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