title: Feshbach resonance in dense ultracold Fermi gases.
abstract: We propose a coherent framework allowing one to treat many-body effects in dense ultracold Fermi gases in the presence of a Feshbach resonance. We show that the simple effect of Pauli exclusion induces a strong modification of the basic scattering properties. In particular, this washes out the Feshbach resonance and provides a natural explanation for recent experimental findings.
authors.affiliation: Laboratoire de Physique Statistique, Ecole Normale Supérieure, Centre National de la Recherche Scientifique, Université Paris 6 et Paris 7, 24 rue Lhomond, 75231 Paris Cedex 05, France.
authors.forename: R
authors.initials: R
authors.lastname: Combescot