title: Stability and phase coherence of trapped 1D Bose gases.
abstract: We discuss stability and phase coherence of 1D trapped Bose gases and find that inelastic decay processes, such as three-body recombination, are suppressed in the strongly interacting (Tonks-Girardeau) and intermediate regimes. This is promising for achieving these regimes with a large number of particles. "Fermionization" of the system reduces the phase coherence length, and at T=0 the gas is fully phase coherent only deeply in the weakly interacting (Gross-Pitaevskii) regime.
authors.affiliation: Laboratoire Kastler-Brossel, Ecole Normale Supérieure, 24 rue Lhomond, 75005 Paris, France.
authors.forename: D M
authors.initials: DM
authors.lastname: Gangardt
authors.forename: G V
authors.initials: GV
authors.lastname: Shlyapnikov