Vitali Vougalter Nonlinear dissipation for some systems of critical NLS equations in two dimensions (116K, pdf) ABSTRACT. We prove the global well-posedness in H^1(R^2, C^N) for certain systems of the critical Nonlinear Schroedinger equations coupled linearly or nonlinearly with nonlinear supercritical dissipation terms, generalizing the previous result obtained for a single equation of this kind.