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The Twist Mode in Atomic Fermi Gases

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arxiv cond-mat/0106416 v1 pith:CC27ZROP submitted 2001-06-20 cond-mat.stat-mech nucl-th

X. Vinas , R. Roth , P. Schuck , J. Wambach This is my paper · ORCID
classification cond-mat.stat-mechnucl-th
keywords modeatomicfermitwistanalogyatomsbulkclosely
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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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