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Twist mode in atomic Fermi gases
Viñas Gausí, Xavier; Roth, R.; Schuck, Peter; Wambach, J.
Universitat de Barcelona
The quantum-kinetic energy of a finite number of trapped fermionic atoms provides a restoring force for shear motion due to a distortion of the momentum distribution. In analogy to the twist mode of nuclear physics, it is proposed that counter rotating the upper and lower hemisphere of a spherical atomic cloud yields a finite-frequency mode closely related to transverse zero sound waves in bulk Fermi liquids.
Constitució de la matèria
Mecànica estadística
Gas d'electrons
Constitution of matter
Statistical mechanics
Electron gas
(c) The American Physical Society, 2001
The American Physical Society

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