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Bloch theorem

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Summary

For a single-particle Hamiltonian periodic under lattice translations, eigenstates can be chosen as a plane-wave phase times a lattice-periodic function and labeled by crystal momentum modulo reciprocal-lattice vectors.

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Periodic-electron modelBloch theorem

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

For a single-particle Hamiltonian invariant under Bravais-lattice translations, simultaneous diagonalization of the commuting translation operators allows energy eigenstates to be chosen in Bloch form. Degeneracies do not invalidate the existence statement.

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Record a genuine theorem implication that is not part of the target definition; these edges may point toward a weaker structure.

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Bloch theoremBloch state

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This is an authored directed relation from the source endpoint to the target endpoint.

Authored explanation

Under lattice periodicity, eigenstates can be chosen to transform by lattice-translation characters and therefore have Bloch form.

How to interpret this relation type

Record a genuine theorem implication that is not part of the target definition; these edges may point toward a weaker structure.

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