Resonating Valence Bond Wave Functions for Strongly Frustrated Spin Systems
Abstract
The resonating-valence-bond (RVB) theory for two-dimensional quantum antiferromagnets is shown to be the correct paradigm for large enough ``quantum frustration.'' This scenario, proposed a long time ago but never confirmed by microscopic calculations, is strongly supported by a new type of variational wave function, which is extremely close to the exact ground state of the J1-J2 Heisenberg model for 0.4<~J2/J1<~0.5. This wave function is proposed to represent the generic spin-half RVB ground state in spin liquids.
- Publication:
-
Physical Review Letters
- Pub Date:
- August 2001
- DOI:
- 10.1103/PhysRevLett.87.097201
- arXiv:
- arXiv:cond-mat/0107204
- Bibcode:
- 2001PhRvL..87i7201C
- Keywords:
-
- Condensed Matter - Strongly Correlated Electrons
- E-Print:
- 4 Pages, 5 figures, accepted for publication in PRL