Quantum dynamics of few dipolar bosons in a double-well potential

Abstract

We study the tunneling dynamics of few dipolar bosons in one-dimensional double-wells. Increasing the interaction strength, by studying one-body observables we cover the pathway from tunneling oscillations to self-trapping and to a regime exhibting an equilibrating behaviour. The corresponding two-body correlation dynamics exhibits a strong interplay between the interatomic correlation due to non-local nature of the repulsion and the inter-well coherence. We further make a link between the correlation dynamics and the occupation of natural orbitals of the one-body density matrix. Four kind of tunneling dynamics are found and discussed.