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Landau and dynamical instabilities of the superflow of Bose-Einstein condensates in optical lattices
Open accessAbstract
The superfluidity of Bose-Einstein condensates (BECs) in optical lattices is investigated. Apart from the usual Landau instability, which occurs when a BEC flows faster than the speed of sound, the BEC can also suffer a dynamical instability, resulting in period doubling and other sorts of symmetry breaking of the system. Such an instability plays a crucial role in the dissipative motion of a trapped BEC in an optical lattice recently observed [Burger et al., Phys. Rev. Lett. 86, 4447 (2001)].
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Citations
Cited by
Ultracold quantum gases in optical lattices
Bloch, I. (2005) · Nature Physics · doi:10.1038/nphys138 · Cited by 1,457
Probing Microcavity Polariton Superfluidity through Resonant Rayleigh Scattering
Carusotto, I., & Ciuti, C. (2004) · Physical Review Letters · doi:10.1103/physrevlett.93.166401 · Cited by 349
Observation of Dynamical Instability for a Bose-Einstein Condensate in a Moving 1D Optical Lattice
Fallani, L., De Sarlo, L., Lye, J. E., Modugno, M., Saers, R., Fort, C., & Inguscio, M. (2004) · Physical Review Letters · doi:10.1103/physrevlett.93.140406 · Cited by 323
Metadata
- Authors
- Wu, B., & Niu, Q.
- Venue
- Physical Review A
- Publisher
- American Physical Society (APS)
- Published
- 2001-11-15
- Volume
- 64
- Issue
- 6
- ISSN
- 0556-2791 (ISSN-L)
- 1050-2947
- 1094-1622
- OpenAlex
- W2166783570
- Cited by
- 394
- References
- 0
- FWCI
- 13.20
- Type
- journal article
- Language
- en
- Open access
- green
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- Wu, B., & Niu, Q. (2001). Landau and dynamical instabilities of the superflow of Bose-Einstein condensates in optical lattices. Physical Review A. https://doi.org/10.1103/physreva.64.061603
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