Critical frequency for vortex nucleation in Bose-Fermi mixtures in optical lattices
| Autor: | M. Centelles, M. Guilleumas, Martí Pi, Ricardo Mayol, Manuel Barranco |
|---|---|
| Přispěvatelé: | Universitat de Barcelona |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Optical lattice Ionization Condensed matter physics Constitució de la matèria Ionització Degenerate energy levels Nucleation FOS: Physical sciences Fermion Atomic and Molecular Physics and Optics law.invention Vortex Condensed Matter - Other Condensed Matter Mean field theory law Excitació nuclear Constitution of matter Bose–Einstein condensate Coherence (physics) Other Condensed Matter (cond-mat.other) |
| Zdroj: | Recercat. Dipósit de la Recerca de Catalunya instname Dipòsit Digital de la UB Universidad de Barcelona |
| Popis: | We investigate within mean-field theory the influence of a one-dimensional optical lattice and of trapped degenerate fermions on the critical rotational frequency for vortex line creation in a Bose-Einstein condensate. We consider laser intensities of the lattice such that quantum coherence across the condensate is ensured. We find a sizable decrease of the thermodynamic critical frequency for vortex nucleation with increasing applied laser strength and suggest suitable parameters for experimental observation. Since 87Rb-40K mixtures may undergo collapse, we analyze the related question of how the optical lattice affects the mechanical stability of the system. 5 pages, 4 figures, revtex4 |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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