This is Bloch's theorem, not boundary conditionsbfollinprm wrote:for reference, the wave function (1D) in a period potential is given by , where U(x) is a function with the same period as the potential, and , which is a result of the boundary condition.
It's OK. They will not appear on the PGRE for at least 10-15 years. But you can read about them in Chapter 8, Ashcroft and Mermin "Solid state physics", if you want.AriAstronomer wrote:I've never heard of periodic boundary conditions
physicsworks wrote:no. Boundary conditions are far more strong statements, than Bloch's theorem with .kangen558 wrote:Bloch's theorem does still apply, but with U(x)=1.
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