Response Function of the Fractional Quantized Hall State on a Sphere II:   Exact Diagonalization
  We study the excitation spectra and the dynamical structure factor of quantum Hall states in a finite size system through exact diagonalization. Comparison is made between the numerical results so obtained and the analytic results obtained from a modified RPA in the preceding companion paper. We find good agreement between the results at low energies. 
Song He, Steven H. Simon, and Bertrand I. Halperin