First-Order Phase Transitions in Optical Lattices with Tunable Three-Body Onsite Interaction
Name
Safavi-Naini-2012-First-Order Phase Transitions in Optical Lattices with Tunable.pdf
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Author(s)
Safavi-Naini, Arghavan
Stecher, Javier von
Capogrosso-Sansone, B.
Rittenhouse, Seth T.
Date Issued
September 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Safavi-Naini, A. et al. “First-Order Phase Transitions in Optical Lattices with Tunable Three-Body Onsite Interaction.” Physical Review Letters 109.13 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We study the two-dimensional Bose-Hubbard model in the presence of a three-body interaction term, both at a mean-field level and via quantum Monte Carlo simulations. The three-body term is tuned by coupling the triply occupied states to a trapped universal trimer. We find that, for a sufficiently attractive three-body interaction, the n=2 Mott lobe disappears and the system displays first-order phase transitions separating the n=1 from the n=3 lobes and the n=1 and n=3 Mott insulator from the superfluid. We also analyze the effect of finite temperature and find that transitions are still of first order at temperatures T∼J, where J is the hopping matrix element.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.109.135302
