2015/09/30 by G. Boéris, L. Gori, M. D. Hoogerland +9 · 2 citations
Physics and Astronomy · #cond-mat.quant-gas
paper · pdf · doi:10.1103/physreva.93.011601
published as Phys. Rev. A 93, 011601 (Rapid Comm.) (2016) · Technical problem in references fixed. Text and figures identical to version 1
arxiv created 2015/10/05 · arxiv updated 2016/03/15
We investigate the superfluid-insulator transition of one-dimensional interacting Bosons in both deep and shallow periodic potentials. We compare a theoretical analysis based on Monte-Carlo simulations in continuum space and Luttinger liquid approach with experiments on ultracold atoms with tunable interactions and optical lattice depth. Experiments and theory are in excellent agreement. It provides a quantitative determination of the critical parameter for the Mott transition and defines the regime of validity of widely used approximate models, namely the Bose-Hubbard and sine-Gordon models