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.
https://hal-iogs.archives-ouvertes.fr/hal-01199719
Contributeur : Laurent Sanchez-Palencia
<>
Soumis le : lundi 5 octobre 2015 - 17:45:04
Dernière modification le : jeudi 11 janvier 2018 - 06:26:41
Document(s) archivé(s) le : mercredi 6 janvier 2016 - 10:51:48
Guilhem Boéris, Lorenzo Gori, Marteen D. Hoogerland, Avinash Kumar, Eleonora Lucioni, et al.. Mott Transition for Strongly-Interacting 1D Bosons in a Shallow Periodic Potential. Physical Review A, American Physical Society, 2016, 93, 011601 (Rapid Comm.). 〈10.1103/PhysRevA.93.011601〉. 〈hal-01199719v2〉
