Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2005-08-17
Phys. Rev. A 72, 063614 (2005)
Physics
Condensed Matter
Other Condensed Matter
7 pages, 4 figures
Scientific paper
10.1103/PhysRevA.72.063614
A sum rule approach is used to calculate the zero temperature oscillation frequencies of a two component trapped atomic Fermi gas in the BCS-Bose Einstein condensation crossover region. These sum rules are evaluated using a local density approximation which explicitly includes Feshbach molecules. Breathing modes show non-monotonic 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 $^6Li$ system and with other theoretical approaches.
de Silva Theja N.
Mueller Erich J.
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