Abstract
A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the Bardeen, Cooper, and Schrieffer-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show nonmonotonic behavior as a function of the interaction strength, while quadrupole modes are insensitive to interactions for both spherically symmetric and axially symmetric traps. Quantitative agreement is found with experiments on atomic Li6 systems and with other theoretical approaches.
| Original language | English (US) |
|---|---|
| Article number | 063614 |
| Journal | Physical Review A - Atomic, Molecular, and Optical Physics |
| Volume | 72 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jan 1 2005 |
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ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
Cite this
Collective oscillations of a Fermi gas near a Feshbach resonance. / DeSilva, Theja Nilantha; Mueller, Erich J.
In: Physical Review A - Atomic, Molecular, and Optical Physics, Vol. 72, No. 6, 063614, 01.01.2005.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Collective oscillations of a Fermi gas near a Feshbach resonance
AU - DeSilva, Theja Nilantha
AU - Mueller, Erich J.
PY - 2005/1/1
Y1 - 2005/1/1
N2 - A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the Bardeen, Cooper, and Schrieffer-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show nonmonotonic behavior as a function of the interaction strength, while quadrupole modes are insensitive to interactions for both spherically symmetric and axially symmetric traps. Quantitative agreement is found with experiments on atomic Li6 systems and with other theoretical approaches.
AB - A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the Bardeen, Cooper, and Schrieffer-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show nonmonotonic behavior as a function of the interaction strength, while quadrupole modes are insensitive to interactions for both spherically symmetric and axially symmetric traps. Quantitative agreement is found with experiments on atomic Li6 systems and with other theoretical approaches.
UR - http://www.scopus.com/inward/record.url?scp=33244472603&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33244472603&partnerID=8YFLogxK
U2 - 10.1103/PhysRevA.72.063614
DO - 10.1103/PhysRevA.72.063614
M3 - Article
AN - SCOPUS:33244472603
VL - 72
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 6
M1 - 063614
ER -