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Abstract
A time-dependent description is given of a scattering process involving a single resonance embedded in a set of flat continua. An analytical approach is presented which starts from an incident free particle wave packet and yields the Breit-Wigner cross-section formula at infinite times. We show that at intermediate times the so-called Wigner-Weisskopf approximation is equivalent to a scattering process involving a contact potential. Applications in cold-atom scattering and resonance enhanced desorption of molecules are discussed.
| Original language | English |
|---|---|
| Article number | 164111 |
| Number of pages | 9 |
| Journal | The Journal of Chemical Physics |
| Volume | 139 |
| Issue number | 16 |
| Early online date | 24 Oct 2013 |
| DOIs | |
| Publication status | Published - 2013 |
Keywords
- time-dependent dynamics
- scattering
- surface desorption
- cold-atom scattering
- resonant processes
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Projects
- 1 Finished