Dynamics of thermal Casimir-Polder forces on polar molecules

Details Dynamics of thermal Casimir-Polder forces on polar molecules Dynamics of thermal Casimir-Polder forces on polar molecules

2008-12-10

arxiv.org/abs/0812.1914v2

Physical Review A 79 (5), 052903 (2009)

Physics

Quantum Physics

6 pages, 3 figures, minor corrections and additions

Scientific paper

10.1103/PhysRevA.79.052903

We study the influence of thermal Casimir-Polder forces on the near-surface trapping of cold polar molecules, with emphasis on LiH and YbF near an Au surface at room temperature. We show that for a molecule initially prepared in its electronic and rovibrational ground state, the Casimir-Polder force oscillates with the molecule-wall separation. The non-resonant force contribution and the evanescent part of the resonant force contribution almost exactly cancel at high temperature which results in a saturation of the (attractive) force in this limit. A dynamical calculation reveals how the spatial oscillations die out as thermalisation of the molecule with its environment sets in.

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