Decay processes in an open Hamiltonian system
Abstract
A complex spectral decomposition is developed for the survival probability and spectral density of a simple metastable state in an open quantum system. The time interval before exponential decay occurs is shown to be dominated by the short-lived quasibound states of the system.
- Publication:
-
Physical Review A
- Pub Date:
- November 1998
- DOI:
- 10.1103/PhysRevA.58.4210
- Bibcode:
- 1998PhRvA..58.4210N
- Keywords:
-
- 31.70.Hq;
- 02.90.+p;
- 03.65.Ge;
- Time-dependent phenomena: excitation and relaxation processes and reaction rates;
- Other topics in mathematical methods in physics;
- Solutions of wave equations: bound states