Moment of inertia and quadrupole response function of a trapped superfluid
- 5 February 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 63 (3) , 033602
- https://doi.org/10.1103/physreva.63.033602
Abstract
We derive an explicit relationship between the moment of inertia and the quadrupole response function of an interacting gas confined in a harmonic trap. The relationship holds for both Bose and Fermi systems and is well-suited to reveal the effects of irrotationality of the superfluid motion. Recent experimental results on the scissors mode are used to extract the value of the moment of inertia of a trapped Bose gas and to point out the deviations from the rigid value due to superfluidity.Keywords
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