- 94-218 Matthias Huebner, Herbert Spohn
- Radiative decay: nonperturbative approaches
Jun 29, 94
(auto. generated ps),
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Abstract. In radiative decay the coupled system, electron bound by some external
potential plus radiation field, relaxes to the ground state in the long
time limit. Our central issue is to prove such a behaviour on the basis
of the corresponding Schr\"odinger equation. We argue that the spin-boson
Hamiltonian is a simple, but physically still acceptable test case.
We relate radiative decay to scattering theory and prove the existence
of wave operators. Other approaches are reviewed and compared.
Some challenging open problems are listed.