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Towards a Bose glass transition in an optical Penrose quasicrystal | | Alberto Cetoli
; Emil Lundh
; | | Date: |
15 Jul 2011 | | Abstract: | We study numerically a 2D Bose-Einstein condensate in a quasiperiodic array
of potential peaks, assumed to be generated by superimposing five blue detuned
laser beams. By using a Bogoliubov ansatz for the excitations we show that the
system approaches a gapless, insulating phase upon increasing the potential,
consistent with a Bose glass phase. The characteristics of the transition in
terms of phase correlations, oscillatory modes, and superfluid fraction are
discussed. | | Source: | arXiv, 1107.3062 | | Services: | Forum | Review | PDF | Favorites | |
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