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

Hutson, JM; Beyene, M; González-Martínez, ML

doi:10.1103/physrevlett.103.163201

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

Hutson, JM; Beyene, M; González-Martínez, ML

Authors

Professor Jeremy Hutson j.m.hutson@durham.ac.uk
Professor

M Beyene

ML González-Martínez

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.

Citation

Hutson, J., Beyene, M., & González-Martínez, M. (2009). Dramatic reductions in inelastic cross sections for ultracold collisions near Feshbach resonances. Physical Review Letters, 103(16), Article 163201. https://doi.org/10.1103/physrevlett.103.163201

Journal Article Type	Article
Publication Date	Oct 1, 2009
Deposit Date	Feb 2, 2012
Publicly Available Date	Jul 12, 2013
Journal	Physical Review Letters
Print ISSN	0031-9007
Electronic ISSN	1079-7114
Publisher	American Physical Society
Peer Reviewed	Peer Reviewed
Volume	103
Issue	16
Article Number	163201
DOI	https://doi.org/10.1103/physrevlett.103.163201