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Twist mode in atomic Fermi gases

Abstract : 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.
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http://hal.in2p3.fr/in2p3-00010636
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Submitted on : Monday, November 19, 2001 - 1:28:09 PM
Last modification on : Thursday, November 19, 2020 - 12:58:34 PM

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X. Vinas, R. Roth, P. Schuck, J. Wambach. Twist mode in atomic Fermi gases. Physical Review A, American Physical Society, 2001, 64, 055601-(3 p.). ⟨10.1103/PhysRevA.64.055601⟩. ⟨in2p3-00010636⟩

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