Collective Field Theory of the Fractional Quantum Hall Edge State and the Calogero-Sutherland Model

Abstract

\noindent Using hydrodynamic collective field theory approach we show that one-particle density matrix of the $ν=1/m$ fractional quantum Hall edge state interpolates between chiral Luttinger liquid behavior $\langle ψ^{\dagger}(r) ψ(0) \rangle \sim r^{-m} $ and Calogero-Sutherland model behavior $\langle ψ^{\dagger}(r) ψ(0) \rangle \sim r^{-(m+1/m)/2} $ as the droplet width is varied continuously. Low-energy excitations are described by $c=1$ conformal field theory of a compact boson of radius $\sqrt m$. The result suggests complementary relation between the two-dimensional quantum Hall droplet and the one-dimensional Calogero-Sutherland model.