Towards a Bose glass transition in an optical Penrose quasicrystal

Alberto Cetoli; Emil Lundh

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arXiv · 1107.3062

Towards a Bose glass transition in an optical Penrose quasicrystal

Alberto Cetoli·Emil Lundh

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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.

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Alberto Cetoli, Emil Lundh. 2011-07-15. Towards a Bose glass transition in an optical Penrose quasicrystal. https://arxiv.org/abs/1107.3062

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