Towards a Bose glass transition in an optical Penrose quasicrystal
Disordered Systems and Neural Networks
2011-07-18 v1 Quantum Gases
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.
Keywords
Cite
@article{arxiv.1107.3062,
title = {Towards a Bose glass transition in an optical Penrose quasicrystal},
author = {Alberto Cetoli and Emil Lundh},
journal= {arXiv preprint arXiv:1107.3062},
year = {2011}
}