Three-body recombination in Bose gases with large scattering length

Дата и время публикации : 2000-02-23T23:29:26Z

Авторы публикации и институты :
P. F. Bedaque (INT)
E. Braaten (Ohio State. U.)
H. -W. Hammer (Ohio State U.)

Ссылка на журнал-издание: Phys.Rev.Lett. 85 (2000) 908-911
Коментарии к cтатье: 8 pages, RevTex, 3 postscript figures, uses epsf.sty, rotate.sty, references added, discussion improved
Первичная категория: cond-mat

Все категории : cond-mat, hep-ph, nucl-th, physics.atom-ph

Краткий обзор статьи: An effective field theory for the three-body system with large scattering length is applied to three-body recombination to a weakly-bound s-wave state in a Bose gas. Our model independent analysis demonstrates that the three-body recombination constant alpha is not universal, but can take any value between zero and 67.9 hbar a^4/m, where a is the scattering length. Other low-energy three-body observables can be predicted in terms of a and alpha. Near a Feshbach resonance, alpha should oscillate between those limits as the magnetic field B approaches the point where a -> infinity. In any interval of B over which a increases by a factor of 22.7, alpha should have a zero.

Category: Physics