 0047 F. Hoevermann, H. Spohn, S. Teufel
 Semiclassical limit for the Schroedinger equation with a short scale periodic potential
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Jan 31, 00

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Abstract. We consider the dynamics generated by the Schroedinger operator $H\frac{1}{2}\Delta + V(x) + W(\epsi x)$, where $V$ is a lattice periodic potential and $W$ an external potential which varies slowly on the scale set by the lattice spacing. We prove that in the limit $\epsi\to 0$ the time dependent position operator and, more generally, semiclassical obsevables converge strongly to a limit which is determined by the semiclassical dynamics.
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