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 shortlived 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;
 Timedependent phenomena: excitation and relaxation processes and reaction rates;
 Other topics in mathematical methods in physics;
 Solutions of wave equations: bound states