NDLI: Collisional properties of ultracold potassium: Consequences for degenerate Bose and Fermi gases

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Collisional properties of ultracold potassium: Consequences for degenerate Bose and Fermi gases

Content Provider	Semantic Scholar
Author	Bohn, John L. Burke, James Patrick Greene, Chris H. Wang, Hai-Yan Gould, Phillip L. Stwalley, William C.
Copyright Year	1999
Abstract	The hyperfine-state-selected scattering properties of potassium atoms at ultralow temperatures are calculated using interaction potentials gleaned from an analysis of recent photoassociation data. We predict that the small, probably negative value of the K triplet scattering length will hamper efforts to produce a Bose-Einstein condensate, unless experiments utilize a broad, accessible magnetic Feshbach resonance. The large positive value calculated for theK triplet scattering length makes it a better candidate for condensation at zero magnetic field. The fermionic isotope K is also predicted to have a large, positive scattering length for elastic collisions between spin states of experimental interest, implying that it can be efficiently evaporatively cooled to the quantum degenerate regime. In addition, certain spin states possess Feshbach resonances that may enable tuning of its interatomic interactions, possibly leading to the formation of Cooper pairs. @S1050-2947 ~99!11405-7#
Starting Page	3660
Ending Page	3664
Page Count	5
File Format	PDF HTM / HTML
DOI	10.1103/PhysRevA.59.3660
Volume Number	59
Alternate Webpage(s)	http://grizzly.colorado.edu/projects/bohn99_pra.pdf
Alternate Webpage(s)	https://doi.org/10.1103/PhysRevA.59.3660
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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