%0 Journal Article
%T Edge Modes in the Hierarchical Fractional Quantum Hall Liquids with Coulomb Interaction
%A Takao Morinari
%A Naoto Nagaosa
%J Physics
%D 1996
%I arXiv
%R 10.1016/0038-1098(96)00379-1
%X Edge modes are studied for the hierarchical fractional quantum Hall liquids (FQHL) by treating the edge and bulk in a unified fashion. Within the RPA treatment of the composite boson effective theory with Coulomb interaction, one edge magneto-plasmon is shown to be the eigen-mode of the system. This mode decays algebraically perpendicular to the edge. All the other modes decay faster than power-law, and correspond to the neutral modes. However these neutral modes generally couple with the electromagnetic field within the magnetic length from the edge. The time-of-flight experiment in the $\nu=2/3$ FQHL is discussed in terms of these results.
%U http://arxiv.org/abs/cond-mat/9606010v1