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Invariant measures for the defocusing NLS

N. Tzvetkov

math.AParXiv:math/0701287

Abstract

We prove the existence and the invariance of a Gibbs measure associated to the defocusing sub-quintic Nonlinear Schroedinger equations on the disc of the plane 2. We also prove an estimate giving some intuition to what may happen in 3 dimensions.

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