常小军，东北师范大学

In this talk, we consider normalized solutions of nonlinear Schrodinger equations in the plane when the nonlinearity satisfies an exponential critical growth. To study the normalized solutions by using variational methods, the Ambrosetti-Rabinowitz type condition plays an important role. By introducing a new energy estimate, we prove the existence of normalized ground state solutions under a weak monotonicity condition but not the Ambrosetti-Rabinowitz type condition.