Abstract
The exact spectrum and thermodynamics of the S=1/2 Heisenberg chain with inverse-square exchange are explicitly obtained in closed form, and a description in terms of semionic spin-1/2 spinon excitations is developed. The unexpected degeneracies of the spectrum lead to a new representation of the k=1 SU(2) Wess-Zumino-Witten conformal field theory that exposes an infinite set of SU(2) symmetries of that model.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1529-1532 |
| Number of pages | 4 |
| Journal | Physical review letters |
| Volume | 66 |
| Issue number | 11 |
| DOIs | |
| State | Published - 1991 |
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy