Spectral singularities and quasi-exactly solvable quantal problem
Abstract
The analytic structure of the few first eigenvalues in the quasi-exactly solvable model of the sextic anharmonic oscillator is studied. It is shown that the Riemann surface of the coupling constant is divided into two parts.
- Publication:
-
Physics Letters A
- Pub Date:
- December 1987
- DOI:
- 10.1016/0375-9601(87)90456-7
- Bibcode:
- 1987PhLA..126..181T