Delocalization in Tight-Binding Hamiltonians: A Modified Coupled-Cluster Based Investigation

Arnaud Boullanger; Vincent Robert

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Delocalization in Tight-Binding Hamiltonians: A Modified Coupled-Cluster Based Investigation

Arnaud Boullanger·Vincent Robert

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Abstract

The nature of delocalization in a 1D system ruled by a tight-binding Hamiltonian is investigated. Using a local evaluation of the ground state energy, it is shown that the range of the delocalization effects is rather limited. The method is applied to 1/2 and 1/4 filled systems.

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Arnaud Boullanger, Vincent Robert. 2005-02-14. Delocalization in Tight-Binding Hamiltonians: A Modified Coupled-Cluster Based Investigation. https://arxiv.org/abs/cond-mat/0502324

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