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

Autor:	Boéris, G., Gori, L., Hoogerland, M. D., Kumar, A., Lucioni, E., Tanzi, L., Inguscio, M., Giamarchi, T., D'Errico, C., Carleo, G., Modugno, G., Sanchez-Palencia, L.
Rok vydání:	2015
Předmět:	Condensed Matter - Quantum Gases
Zdroj:	Phys. Rev. A 93, 011601 (Rapid Comm.) (2016)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevA.93.011601
Popis:	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 Comment: Technical problem in references fixed. Text and figures identical to version 1
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1509.04742 Zobrazit plný text záznamu View this record from Arxiv