January 2009

Journal

The logarithmic discretization embedded cluster approximation

By:
Anda, E.; Chiappe, G.; Busser, C. A.; Davidovich, M. A.; Martins, G.; Heidrich-Meisner, F.; Dagotto Mir, Elbio R
Journal Name:
Physica B: Condensed Matter
Page Number:
2689-2693
Volume:
404
Issue Number:
18
Publication Date:
January 2009
View DOI Listing:
https://doi.org/10.1016/j.physb.2009.06.068

Abstract

This work proposes a new approach to study transport properties of highly correlated local structures. The method, dubbed the logarithmic discretization embedded cluster approximation (LDECA), consists of diagonalizing a finite cluster containing the many-body terms of the Hamiltonian and embedding it into the rest of the system, combined with Wilson’s idea of a logarithmic discretization of the representation of the band. A many-body formalism provides a solid theoretical foundation to the method.


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