The Holstein-Anderson impurity model

A Holstein-Anderson impurity model is presented. Both the electronic states and the vibrational mode associated to the impurity are treated within a novel 'entangled' effective medium approach (a non-perturbative, self-consistent method). Vibronic spectra and susceptibilities are readily computed for the symmetric, half-filled case. As expected, charge fluctuations (electron-phonon interactions) depletes the magnetic response (susceptibility) when compared to the no-phonon case. © 2001 Published by Elsevier Science B.V.

The two-impurity Anderson model: An effective medium approach

The two-impurity Anderson model is solved within a effective medium approach. All impurity parameters are modelled via Slater atomic orbitals. Impurity spectral densities and spin correlation functions are readily computed. Results are presented for the zero temperature, half-filled case. © 2002 Elsevier Science B.V. All rights reserved.

Anuario Estadístico de América Latina y el Caribe 1993 = Statistical Yearbook for Latin America and the Caribbean 1993

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Estudio Económico de América Latina y el Caribe 1993: volumen I = Economic Survey of Latin America and the Caribbean 1993: volume I

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Estudio Económico de América Latina y el Caribe 1993: volumen II = Economic Survey of Latin America and the Caribbean 1993: volume II

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Panorama económico de América Latina, 1993 = Economic panorama of Latin America, 1993

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Panorama Social de América Latina 1993

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DOCPAL resúmenes sobre población en Paraguay: literatura aparecida entre 1970-1993: resúmenes 001-549 = DOCPAL abstracts on population in Paraguay: literature from 1970-1993: abstracts 001-549

Publicación bilingüe

Escritos de Aníbal Pinto Santa Cruz, 1946-1993: bibliografía existente en la Biblioteca de la CEPAL

Se incluyó además en la investigación la Biblioteca de la Fundación Educacional "Roberto Bellarmino" y la Biblioteca de la Facultad Latinoamericana de Ciencias Sociales (FLACSO)

Escritos de Gert Rosenthal K., 1962-1993: bibliografía existente en la Biblioteca de la CEPAL. Versión revisada

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Universal conductance for the Anderson model

We discuss the thermal dependence of the zero-bias electrical conductance for a quantum dot embedded in a quantum wire, or side-coupled to it. In the Kondo regime, the temperature-dependent conductances map linearly onto the conductance for the symmetric Anderson Hamiltonian. The mapping fits accurately numerical renormalization-group results for the conductance in each geometry. In the side-coupled geometry, the conductance is markedly affected by a gate potential applied to the wire; in the embedded geometry, it is not. © 2010 IOP Publishing Ltd.