✦ LIBER ✦
The accurate expression of the ground state for square lattice S=1/2 Heisenberg antiferromagnet by RVB-strings spreading over any N-TH N.N.
✍ Scribed by Y. Natsume; T. Hamada; S. Nakagawa; J. Kane; M. Katagiri
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 196 KB
- Volume
- 165-166
- Category
- Article
- ISSN
- 0921-4526
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✦ Synopsis
The method of constructing the ground state of square lattice quantum Heisenberg antiferromagnet is proposed on the basis of the covering by RVB-strings, where RVB with larger distance than nearest neighbor is considered. By introducing only a few geometrical parameters in the variational procedure, we obtain the quite accurate expression.