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I've been reading about the tight-binding model, and I have some questions. Lets say we have the HamiltonianHfor our lattice, and it satisfies

Hψ= Eψ,

whereψis a vector containing the wavefunction for each atom in the lattice. When I solve the above equation e.g. numerically, I get the eigenvectorsψ. In my case theψ's just contain numbers, but does this mean that the waverfuncion for each atom is constant?

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# Tight-binding model

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