Abstract

Exciton spectra of a ν = 2 3 Incompressible Quantum Liquid (IQL) are investigated and compared with those of a ν = 1 3 IQL. Difference in exciton spectra of these IQL's is related to the asymmetry in the statistical and dynamical properties of quasielectrons and quasiholes of the same IQL which follows from the composite fermion theory. Energy spectra and electron form factors of excitons of a ν = 2 3 IQL are in a satisfactory agreement with the anyon exciton model. They are also compatible with the assignment of magnetorotons as quasiparticles with the intrinsic angular momentum 2.

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