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

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

2005-02-14

arxiv.org/abs/cond-mat/0502324v1

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages, 3 figures

Scientific paper

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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