Twist mode in atomic Fermi gases - art. no. 055601

Authors
Vinas, X Roth, R Schuck, P Wambach, J
Citation
X. Vinas et al., Twist mode in atomic Fermi gases - art. no. 055601, PHYS REV A, 6405(5), 2001, pp. 5601
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6405
Issue
5
Year of publication
2001
Database
ISI
SICI code
1050-2947(200111)6405:5<5601:TMIAFG>2.0.ZU;2-0
Abstract
The quantum-kinetic energy of a finite number of trapped fermionic atoms pr ovides a restoring force for shear motion due to a distortion of the moment um distribution. In analogy to the twist mode of nuclear physics, it is pro posed that counter rotating the upper and lower hemisphere of a spherical a tomic cloud yields a finite-frequency mode closely related to transverse ze ro sound waves in bulk Fermi liquids.