Neutral excitation and bulk gap of fractional quantum Hall liquids in disk geometry |
(a) The energy spectrum for 5 dipolar fermions in 15 ortitals with the confinement potential γ=0.005 as varying α. The states labelled by dark blue points have the maximum overlap with Laughlin state. (b) The largest overlap along the dark blue points. The particle density and their profiles along x/y directions for the ground state at α=0° (c) and the highest energy state at α=90° (d). |