Abstract
We derive a resonance field-theory for ultra-cold Bose or Fermi gases
that is valid when scattering resonances are present. Experiments with a
^85Rb condensate have shown new interesting physics close to
resonance(N.R. Claussen, E.A. Donley, S.T. Thompson, C.E. Wieman,
e-print cond-mat/0201400.). It is also expected that utilizing a
Feshbach resonance can greatly enhance the critical temperature for
superfluidity in a Fermi gas(M. Holland, S.J.J.M.F. Kokkelmans, M.L.
Chiofalo, and R. Walser, Phys. Rev. Lett. 87), 120406 (2001).. Therefore
it is important to treat the rich scattering physics properly inside a
many-body theory. We show that the scattering length only is
insufficient to describe a system close to resonance. Our many-body
equations have build-in the two-body scattering equations, and we
include the full scattering solution over the relevant energy range by
means of a renormalized resonance scattering theory(S.J.J.M.F.
Kokkelmans, J.N. Milstein, M.L. Chiofalo, R. Walser, and M.J. Holland,
e-print cond-mat/0112283.).
| Original language | English |
|---|---|
| Publication status | Published - 1 May 2002 |
| Event | 33rd Annual Meeting of the APS Division of Atomic, Molecular, and Optical Physics, DAMOP 2002 - Williamsburg, United States Duration: 29 Jun 2002 → 1 Jul 2002 Conference number: 33 |
Conference
| Conference | 33rd Annual Meeting of the APS Division of Atomic, Molecular, and Optical Physics, DAMOP 2002 |
|---|---|
| Abbreviated title | DAMOP 2002 |
| Country/Territory | United States |
| City | Williamsburg |
| Period | 29/06/02 → 1/07/02 |