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http://hdl.handle.net/2445/9768
Title: | Exact lower bounds to the ground-state energy of spin systems: The two-dimensional S=1/2 antiferromagnetic Heisenberg model |
Author: | Tarrach, R., 1948- Valentí i Vall, M. Roser |
Keywords: | Superconductors Magnetisme Superconductors Magnetism |
Issue Date: | 1990 |
Publisher: | The American Physical Society |
Abstract: | We present a very simple but fairly unknown method to obtain exact lower bounds to the ground-state energy of any Hamiltonian that can be partitioned into a sum of sub-Hamiltonians. The technique is applied, in particular, to the two-dimensional spin-1/2 antiferromagnetic Heisenberg model. Reasonably good results are easily obtained and the extension of the method to other systems is straightforward. |
Note: | Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.41.9611 |
It is part of: | Physical Review B, 1990, vol. 41, núm. 13, p. 9611-9613. |
URI: | http://hdl.handle.net/2445/9768 |
Related resource: | http://dx.doi.org/10.1103/PhysRevB.41.9611 |
ISSN: | 0163-1829 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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