CHARACTERIZATION OF FRACTIONAL-QUANTUM-HALL-EFFECT QUASI-PARTICLES

Composite fermions in a partially filled quasi-landau level may be vie wed as quasielectrons of the underlying fractional quantum Hall state, suggesting that a quasielectron is simply a dressed electron, as ofte n is true in other interacting electron systems, and as a result has t he same intrinsic charge and exchange statistics as an electron. This paper discusses how this result is reconciled with the earlier picture in which quasiparticles are viewed as fractionally-charged fractional -statistics ''solitons'', While the two approaches provide the same an swers for the long-range interactions between the quasiparticles, the dressed-electron description is more conventional and unifies the view of quasiparticle dynamics in and beyond the fractional quantum Hall r egime.