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Commensurate Two-Component Bosons in an Optical Lattice: Ground State Phase Diagram
Open accessAbstract
Two sorts of bosons in an optical lattice at commensurate filling factors can form five stable super-fluid and insulating ground states with rich and nontrivial phase diagram. The structure of the ground state diagram is established by mapping a d-dimensional quantum system onto a (d+1)-dimensional classical loop-current model and Monte Carlo (MC) simulations of the latter. Surprisingly, the quantum phase diagram features, besides second-order lines, first-order transitions and two multicritical points. We explain why first-order transitions are generic for models with pairing interactions using microscopic and mean-field (MF) arguments. In some cases, the MC results strongly deviate from the MF predictions.
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Cites
Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
Greiner, M., Mandel, O., Esslinger, T., Hänsch, T. W., & Bloch, I. (2002) · Nature · doi:10.1038/415039a · Cited by 5,935
Boson localization and the superfluid-insulator transition
Fisher, M. P. A., Weichman, P. B., Grinstein, G., & Fisher, D. S. (1989) · Physical Review B · doi:10.1103/physrevb.40.546 · Cited by 3,512
Cited by
Ultracold quantum gases in optical lattices
Bloch, I. (2005) · Nature Physics · doi:10.1038/nphys138 · Cited by 1,457
Jaksch, D., & Zoller, P. (2005) · Annals of Physics · doi:10.1016/j.aop.2004.09.010 · Cited by 976
Double Species Bose-Einstein Condensate with Tunable Interspecies Interactions
Thalhammer, G., Barontini, G., De Sarlo, L., Catani, J., Minardi, F., & Inguscio, M. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.210402 · Cited by 425
Metadata
- Authors
- Kuklov, A., Prokof’ev, N., & Svistunov, B.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2004-02-03
- Volume
- 92
- Issue
- 5
- Pages
- 050402-050402
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2013003024
- Cited by
- 190
- References
- 2
- FWCI
- 7.37
- Type
- journal article
- Language
- en
- Open access
- green
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