  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.
