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http://hdl.handle.net/11154/1716
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Title: | Two-particle correlations in the one-dimensional Hubbard model: a ground-state analytical solution |
Authors: | Vallejo, E Navarro, O Espinosa, JE |
Issue Date: | 2003 |
Abstract: | A solution to the extended Hubbard Hamiltonian for the case of two-particles in an infinite one-dimensional lattice is presented, using a real-space mapping method and the Green function technique. This Hamiltonian considers the on-site (U) and the nearest-neighbor (V) interactions. The method is based on mapping the correlated many-body problem onto an equivalent site-impurity tight-binding one in a higher dimensional space. In this new space we obtained the analytical solution for the ground state binding energy. Results are in agreement with the numerical solution obtained previously [1], and with those obtained in the reciprocal space [2]. |
URI: | http://hdl.handle.net/11154/1716 |
ISSN: | 0035-001X |
Appears in Collections: | Ciencias
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