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arXiv · 1509.04742

Mott Transition for Strongly-Interacting 1D Bosons in a Shallow Periodic Potential

G. Boéris·L. Gori·M. D. Hoogerland·A. Kumar·E. Lucioni·L. Tanzi·M. Inguscio·T. Giamarchi·C. D'Errico·G. Carleo·G. Modugno·L. Sanchez-Palencia
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Abstract

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

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G. Boéris, L. Gori, M. D. Hoogerland, A. Kumar, E. Lucioni, L. Tanzi, M. Inguscio, T. Giamarchi, C. D'Errico, G. Carleo, G. Modugno, L. Sanchez-Palencia. 2015-09-15. Mott Transition for Strongly-Interacting 1D Bosons in a Shallow Periodic Potential. https://doi.org/10.1103/physreva.93.011601

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