Abstract
We will prove the existence of an invariant measure for a nonlinear Schrodinger equation with random noise in R n . The existence of solutions of the Cauchy problem in H 1 - and L 2 -settings was established by de Bouard and Debussche [4, 5]. Here we discuss only the defocusing equation with a zero-order dissipation. The proof for the existence of an invariant measure is based on various energy estimates and the approximation scheme to construct solutions, which are also crucial for the existence of global solutions to the Cauchy problem.
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