Feshbach-Einstein Condensates

V. G. Rousseau and P. J. H. Denteneer
Phys. Rev. Lett. 102, 015301 – Published 6 January 2009

Abstract

We investigate the phase diagram of a two-species Bose-Hubbard model describing atoms and molecules on a lattice, interacting via a Feshbach resonance. We identify a region where the system exhibits an exotic super-Mott phase and regions with phases characterized by atomic and/or molecular condensates. Our approach is based on a recently developed exact quantum Monte Carlo algorithm: the stochastic Green function algorithm with tunable directionality. We confirm some of the results predicted by mean-field studies, but we also find disagreement with these studies. In particular, we find a phase with an atomic but no molecular condensate, which is missing in all mean-field phase diagrams.

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  • Received 21 October 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.015301

©2009 American Physical Society

Authors & Affiliations

V. G. Rousseau and P. J. H. Denteneer

  • Instituut-Lorentz, LION, Universiteit Leiden, Postbus 9504, 2300 RA Leiden, The Netherlands

Comments & Replies

Comment on “Feshbach-Einstein Condensates”

María Eckholt and Tommaso Roscilde
Phys. Rev. Lett. 105, 199603 (2010)

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Vol. 102, Iss. 1 — 9 January 2009

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