Stabilization of the Schrodinger equation with a delay term in boundary feedback or internal feedback

In this paper, we investigate the eect of time delays in boundary or internal feedback stabilization of the Schrodinger equation. In both cases, under suitable assump- tions, we establish su‰cient conditions on the delay term that guarantee the exponential stability of the solution. These results are obtained by using suitable energy functionals and some observability estimates.

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