Control of Ultra-cold Inelastic Collisions by Feshbash Resonances and Quasi-One-Dimensional Confinement
arXiv:physics/0602181 · doi:10.1103/PhysRevA.75.012717
Abstract
Cold inelastic collisions of atoms or molecules are analyzed using very general arguments. In free space, the deactivation rate can be enhanced or suppressed together with the scattering length of the corresponding elastic collision via a Feshbach resonance, and by interference of deactivation of the closed and open channels. In reduced dimensional geometries, the deactivation rate decreases with decreasing collision energy and does not increase with resonant elastic scattering length. This has broad implications; e.g., stabilization of molecules in a strongly confining two-dimensional optical lattice, since collisional decay of the highly vibrationally excited states due to inelastic collisions is suppressed. The relation of our results with those based on the Lieb-Liniger model are addressed.
arXiv comment5 pages, 1 figure
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- Single-atom transistor as a precise magnetic field sensor
- Ultracold atoms in quasi-1D traps: a step beyond the Lieb-Liniger model
- Effects of nonintegrability on stabilization of Feshbach molecules in atom waveguides
- Suppression of two-body collisional loss in an ultracold gas via the Fano effect
- Seeking better times: atomic clocks in the generalized Tonks-Girardeau regime