Collective molecule formation in a degenerate Fermi gas via a Feshbach resonance.
We model collisionless collective conversion of a degenerate Fermi gas of atoms into bosonic molecules via a Feshbach resonance, treating the bosonic molecules as a classical field and seeding the pairing amplitudes with random phases. A dynamical instability of the Fermi sea against association with molecules drives the conversion. The model qualitatively reproduces several experimental observations [Regal et al., Nature (London), (2003)]. We predict that the initial temperature of the Fermi gas sets the limit for the efficiency of atom-molecule conversion.
Javanainen
Juha
J
Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA.
Kostrun
Marijan
M
Zheng
Yi
Y
Carmichael
Andrew
A
Shrestha
Uttam
U
Meinel
Patrick J
PJ
Mackie
Matt
M
Dannenberg
Olavi
O
Suominen
Kalle-Antti
KA