title: Many bosons in a narrow magnetic Feshbach resonance.
abstract: The many-boson problem in the presence of an asymptotically narrow Feshbach resonance is considered. The low energy properties are investigated using a two-channel Hamiltonian. The energy spectrum of this model is shown to be bounded from below in the limit of a zero range interaction. This implies the promising possibility of achieving a strongly interacting bosonic phase in a dilute regime where the details of the actual interatomic forces are irrelevant. The integral relation between the energy and the one-body momentum distribution is derived.
authors.affiliation: Laboratoire de Physique Théorique de la Matière Condensée, Université Pierre et Marie Curie and CNRS, 4 place Jussieu, 75252 Paris, France.
authors.forename: Ludovic
authors.initials: L
authors.lastname: Pricoupenko