Interatomic collisions and spectra at near-threshold energies |
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| Tim-Oliver Müller | |
| Technische Universität München | |
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Typical interatomic interactions are substantially governed by characteristic long-range potentials. The explicit form of these potential tails has a significant impact on the collisional and spectral properties, especially at near-threshold energies.
A formalism is presented that allows for the transparent separation of the influence of the tail potential from the effects due to the short-range part of the interaction. These effects are parametrized in a convenient fashion by utilizing a modified form of the WKB approximation. Explicit results are presented in order to demonstrate the applicability of this formalism to realistic atomic systems including multi-channel phenomena, such as Feshbach resonances. |