
The concept of composite fermions, and the related Fermion-Chern-Simons theory, have been powerful tools for understanding quantum Hall systems with a partially full lowest Landau level. We shall review some of the successes of the Fermion-Chern-Simons theory, as well as some limitations and outstanding issues.
13 pages, including 2 figures. Invited talk at International Symposium, Quantum Hall Effect: Past, Present and Future, Stuttgart, July 2003. Proceedings to appear in Physica E
Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter
Condensed Matter (cond-mat), FOS: Physical sciences, Condensed Matter
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