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Cellular Dynamical Mean Field Approach to Strongly Correlated Systems

Gabriel Kotliar·Sergej Y. Savrasov·Gunnar Palsson
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Abstract

We propose a cellular version of dynamical-mean field theory which gives a natural generalization of its original single-site construction and is formulated in different sets of variables. We show how non-orthogonality of the tight-binding basis sets enters the problem and prove that the resulting equations lead to manifestly causal self energies.

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Gabriel Kotliar, Sergej Y. Savrasov, Gunnar Palsson. 2000-10-20. Cellular Dynamical Mean Field Approach to Strongly Correlated Systems. https://doi.org/10.1103/physrevlett.87.186401

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