Abstract
We show that a two-dimensional electron gas in the incompressible spin-singlet quantum-Hall-effect (SQHE) state supports boundary excitations with quantum numbers derived from a non-Abelian SU(2), associated with the spin. These edge excitations have spin-charge separation, and we exhibit neutral spinons and spinless holons. The dynamics of the spinons is governed by a chiral SU(2)k=1 Wess-Zumino-Witten model that is naturally related to the SU(2) Chern-Simons action describing the bulk of the SQHE sample.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 8038-8043 |
| Number of pages | 6 |
| Journal | Physical Review B |
| Volume | 43 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1991 |
ASJC Scopus subject areas
- Condensed Matter Physics