Exact lower bounds to the ground-state energy of spin systems: The two-dimensional S=1/2 antiferromagnetic Heisenberg model

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Tarrach, R., 1948-
dc.contributor.author	Valentí i Vall, M. Roser
dc.date	2009-10-22T10:20:54Z
dc.date	2009-10-22T10:20:54Z
dc.date	1990
dc.identifier.citation	0163-1829
dc.identifier.citation	57979
dc.identifier.uri	http://hdl.handle.net/2445/9768
dc.format	3 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	The American Physical Society
dc.relation	Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevB.41.9611
dc.relation	Physical Review B, 1990, vol. 41, núm. 13, p. 9611-9613.
dc.relation	http://dx.doi.org/10.1103/PhysRevB.41.9611
dc.rights	(c) The American Physical Society, 1990
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Superconductors
dc.subject	Magnetisme
dc.subject	Superconductors
dc.subject	Magnetism
dc.title	Exact lower bounds to the ground-state energy of spin systems: The two-dimensional S=1/2 antiferromagnetic Heisenberg model
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.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.

García Bach, Ma. de los Ángeles; Valentí i Vall, M. Roser; Klein, D. J.

Klein, D. J.; Schmalz, T. G.; García Bach, Ma. de los Ángeles; Valentí i Vall, M. Roser; Živkovic, T. P.

Sanpera Trigueros, Anna; Tarrach, R., 1948-; Vidal Bonafont, Guifré

Vidal Bonafont, Guifré; Tarrach, R., 1948-

Latorre, José Ignacio; Pascual, Pedro, 1934-2006; Tarrach, R., 1948-

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