Journal
ANNALEN DER PHYSIK
Volume 528, Issue 9-10, Pages 693-704Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.201500365
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- Helmholtz-Association [HA216/EMMI]
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We analyze the dynamics of two atoms with a short-ranged pair interaction in a one-dimensional harmonic trap with time-dependent frequency. Our analysis is focused on two representative cases: (i) a sudden change of the trapping frequency from one value to another, and (ii) a periodic trapping frequency. In case (i), the dynamics of the interacting and the corresponding non-interacting systems turn out to be similar. In the second case, however, the interacting system can behave quite differently, especially close to parametric resonance. For instance, in the regions where such resonance occurs we find that the interaction can significantly reduce the rate of energy increase. The implications for applications of our findings to cool or heat the system are also discussed.
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