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Dramatic reductions in inelastic cross sections for ultracold collisions near Feshbach resonances.

Hutson, J.M. and Beyene, M. and González-Martínez, M.L. (2009) 'Dramatic reductions in inelastic cross sections for ultracold collisions near Feshbach resonances.', Physical review letters., 103 (16). p. 163201.

Abstract

We show that low-energy inelastic cross sections can decrease as well as increase in the vicinity of a zero-energy Feshbach resonance. When an external field is used to tune across such a resonance, the real and imaginary parts of the scattering length show asymmetric oscillations with both peaks and troughs. In favorable circumstances, the inelastic collision rate can be reduced to almost zero. This may be important for efforts to achieve evaporative and sympathetic cooling for molecules.

Item Type:Article
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Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1103/PhysRevLett.103.163201
Publisher statement:© 2009 The American Physical Society
Date accepted:No date available
Date deposited:12 July 2013
Date of first online publication:October 2009
Date first made open access:No date available

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