2019/09/24 by Mourad Choulli, Choulli, Mourad · 1 citation
Mathematics · #Numerical methods in inverse problems #Advanced Mathematical Physics Problems #Mathematical Analysis and Transform Methods
paper · pdf · doi:10.48550/arxiv.1909.11133
We summarize in these notes the course given at the Summer School of AIP 2019 held in Grenoble from July 1st to July 5th. This course was mainly devoted to the determination of the unbounded potential in a Schrödinger equation from the associated Dirichlet-to-Neumann map (abbreviated to DN map in this text). We establish a stability inequality for potentials belonging to Ln, where n≥ 3 is the dimension of the space. Next, we prove a uniqueness result for potentials in Ln/2, n≥ 3, and apply this uniqueness result to demonstrate a Borg-Levinson type theorem. We use a classical approach which is essentially based on the construction of the so-called complex geometric optic solutions (abbreviated to CGO solutions in this text).