title: Multiparticle Bound-State Formation following a Quantum Quench to the One-Dimensional Bose Gas with Attractive Interactions.
abstract: We consider quantum quenches from an ideal Bose condensate to the Lieb-Liniger model with an arbitrary attractive interaction strength. We focus on the properties of the stationary state reached at late times after the quench. Using recently developed methods based on integrability, we obtain an exact description of the stationary state for a large number of bosons. A distinctive feature of this state is the presence of a hierarchy of multiparticle bound states. We determine the dependence of their densities on interaction strength and obtain an exact expression for the stationary value of the local pair correlation g_{2}. We discuss ramifications of our results for cold atom experiments.
authors.affiliation: SISSA and INFN, via Bonomea 265, 34136 Trieste, Italy.
authors.forename: Lorenzo
authors.initials: L
authors.lastname: Piroli
authors.affiliation: SISSA and INFN, via Bonomea 265, 34136 Trieste, Italy.
authors.forename: Pasquale
authors.initials: P
authors.lastname: Calabrese
authors.affiliation: The Rudolf Peierls Centre for Theoretical Physics, Oxford University, Oxford OX1 3NP, United Kingdom.
authors.forename: Fabian H L
authors.initials: FH
authors.lastname: Essler