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Mott insulators

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<strong>Mott</strong> <strong>insulators</strong><br />

Metal-insulator transition from the insulating side<br />

Hubbard-model:<br />

density: n=1<br />

„ground state“<br />

n.n. hopping<br />

t = 0<br />

onsite repulsion<br />

E<br />

charge excitation<br />

U<br />

h<br />

d

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