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- W3103291119 abstract "We consider the Schrodinger equation with a time-independent weakly random potential of a strength $epsilonll 1$, with Gaussian statistics. We prove that when the initial condition varies on a scale much larger than the correlation length of the potential, the compensated wave function converges to a deterministic limit on the time scale $tsimepsilon^{-2}$. This is shown under the sharp assumption that the correlation function $R(x)$ of the random potential decays slower than $1/|x|^2$, which ensures that the effective potential is finite. When $R(x)$ decays slower than $1/|x|^2$ we establish an anomalous diffusive behavior for the averaged wave function on a time scale shorter than $epsilon^{-2}$, as long as the initial condition is sufficiently macroscopic. We also consider the kinetic regime when the initial condition varies on the same scale as the random potential and obtain the limit of the averaged wave function for potentials with the correlation functions decaying faster than $1/|x|^2$. We use random potentials of the Schonberg class which allows us to bypass the oscillatory phase estimates." @default.
- W3103291119 created "2020-11-23" @default.
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- W3103291119 date "2017-08-19" @default.
- W3103291119 modified "2023-09-23" @default.
- W3103291119 title "The Weak Coupling Limit for the Random Schrödinger Equation: The Average Wave Function" @default.
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- W3103291119 doi "https://doi.org/10.1007/s00205-017-1163-7" @default.
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