- #1
Manchot
- 473
- 4
One thing that's always bothered me about Bloch's theorem is the periodic boundary conditions which are imposed on the system. Clearly, when dealing with an actual solid, the more natural choice would be to impose zero at the boundaries. I know that periodic conditions make the math easier, but honestly, the whole thing seems like a complete farce to me. Why bother trying to find the eigenstates of the system if the eigenstates you obtain aren't even the correct ones?