Berry's phase of bloch oscillation

  • Thread starter wdlang
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Main Question or Discussion Point

we know in bloch oscillation, the wavefunction of an electron returns to its initial state after a period, but up to a phase.

my question is, can this phase be nontrivial?
 

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  • #2
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we know in bloch oscillation, the wavefunction of an electron returns to its initial state after a period, but up to a phase.

my question is, can this phase be nontrivial?

I don't think a periodic potential by itself leads to berry phase--berry phase arises when the Hamiltonian depends on parameters which are taken around a closed path in the parameter space.
 

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