Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice
Quantum Gases
2010-01-25 v3 Other Condensed Matter
Abstract
We propose to realize the anisotropic triangular-lattice Bose-Hubbard model with positive tunneling matrix elements by using ultracold atoms in an optical lattice dressed by a fast lattice oscillation. This model exhibits frustrated antiferromagnetism at experimentally feasible temperatures; it interpolates between a classical rotor model for weak interaction, and a quantum spin-1/2 -model in the limit of hard-core bosons. This allows to explore experimentally gapped spin liquid phases predicted recently [Schmied et al., New J. Phys. {\bf 10}, 045017 (2008)].
Keywords
Cite
@article{arxiv.0907.0423,
title = {Frustrated quantum antiferromagnetism with ultracold bosons in a triangular lattice},
author = {Andre Eckardt and Philipp Hauke and Parvis Soltan-Panahi and Christoph Becker and Klaus Sengstock and Maciej Lewenstein},
journal= {arXiv preprint arXiv:0907.0423},
year = {2010}
}
Comments
6 pages, as published in EPL