Stability of Bose-Einstein condensates in two-dimensional optical lattices

Journal Article · Thu Apr 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.043611· OSTI ID:21408671

Zhu, Chen; Biao, Wu ^[1]

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1. Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

Both Landau instability and dynamical instability of Bose-Einstein condensates in moving two-dimensional optical lattices are investigated numerically and analytically. Phase diagrams for both instabilities are obtained numerically for different system parameters. These phase diagrams show that the Landau instability does not depend on direction for weak lattices while the dynamic instability is direction dependent. These features are explained analytically.

• OSTI ID: 21408671
• Journal Information: Physical Review. A, Vol. 81, Issue 4; Other Information: DOI: 10.1103/PhysRevA.81.043611; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSE-EINSTEIN CONDENSATION
INSTABILITY
PHASE DIAGRAMS
STABILITY
TWO-DIMENSIONAL CALCULATIONS
DIAGRAMS
INFORMATION