1212.3927 (Ludovic Pricoupenko)

Many bosons in a narrow resonance: the $R^\star$-phase issue    [PDF]

Ludovic Pricoupenko

The many-boson problem in presence of an asymptotically narrow Feshbach resonance is considered. The energy spectrum is shown to be bounded from below in the limit of 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.

View original: http://arxiv.org/abs/1212.3927