Research output: Contribution to journal › Article › peer-review
We consider the difference Schrödinger equation (Formula presented.) where z is a complex variable, E is a spectral parameter, and h is a small positive parameter. If the potential v is an analytic function, then, for h sufficiently small, the analytic solutions to this equation have standard semi-classical behavior that can be described by means of an analog of the complex WKB method for differential equations. We assume that v has a simple pole and, in its neighborhood, we study the asymptotics of meromorphic solutions to the difference Schrödinger equation.
| Original language | English |
|---|---|
| Pages (from-to) | 1557-1573 |
| Number of pages | 17 |
| Journal | Applicable Analysis |
| Volume | 100 |
| Issue number | 7 |
| Early online date | 16 Aug 2019 |
| DOIs | |
| State | Published - 19 May 2021 |
ID: 45217809