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Título: | Dimer-hole-RVB state of the two-leg t-J ladder: A recurrent variational ansatz |
Autor: | Sierra, Germán CSIC ORCID; Martín-Delgado, Miguel Ángel; Dukelsky, Jorge CSIC ORCID; White, S. R.; Scalapino, D.J. | Fecha de publicación: | 1998 | Editor: | American Physical Society | Citación: | Physical Review B 57: 11666- 11673 (1998) | Resumen: | We present a variational treatment of the ground state of the two-leg t-J ladder, which combines the dimer and the hard-core boson models into one effective model. This model allows us to study the local structure of the hole pairs as a function of doping. A second-order recursion relation is used to generate the variational wave function, which substantially simplifies the computations. We obtain good agreement with numerical density matrix renormalization group results for the ground state energy in the strong-coupling regime. We find that the local structure of the pairs depends upon whether the ladder is slightly or strongly dopped. © 1998 The American Physical Society | URI: | http://hdl.handle.net/10261/100525 | DOI: | 10.1103/PhysRevB.57.11666 | Identificadores: | doi: 10.1103/PhysRevB.57.11666 issn: 0163-1829 |
Aparece en las colecciones: | (CFMAC-IFF) Artículos (CFMAC-IEM) Artículos |
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