# American Institute of Mathematical Sciences

June  2019, 12(3): 503-512. doi: 10.3934/dcdss.2019033

## On the existence and uniqueness of the solution of an optimal control problem for Schrödinger equation

 1 Iǧdır University, Faculty of Science and Art, Department of Mathematics, Iǧdır, Turkey 2 Kafkas University, Faculty of Science and Art, Department of Mathematics, Kars, Turkey 3 Atatürk University, Faculty of Science, Department of Mathematics, Erzurum, Turkey

* Corresponding author: gokce.kucuk@igdir.edu.tr

Received  March 2017 Revised  July 2017 Published  September 2018

In this paper, an optimal control problem for Schrödinger equation with complex coefficient which contains gradient is examined. A theorem is given that states the existence and uniqueness of the solution of the initial-boundary value problem for Schrödinger equation. Then for the solution of the optimal control problem, two different cases are investigated. Firstly, it is shown that the optimal control problem has a unique solution for $α >0$ on a dense subset $G$ on the space $H$ which contains the measurable square integrable functions on $\left(0,l\right)$ and secondly the optimal control problem has at least one solution for any $α ≥ 0$ on the space $H$.

Citation: Gökçe Dİlek Küçük, Gabil Yagub, Ercan Çelİk. On the existence and uniqueness of the solution of an optimal control problem for Schrödinger equation. Discrete & Continuous Dynamical Systems - S, 2019, 12 (3) : 503-512. doi: 10.3934/dcdss.2019033
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