“Slow” wave of zero-sound in degenerate Fermi gas |
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Authors: | Yuri Poluektov Volodymyr Savchenko |
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Institution: | 1. Akhiezer Institute for Theoretical Physics, NSC “Kharkov Institute of Physics and Technology”, 1, Akademicheskaya Str., Kharkov UA, 61108, Ukraine
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Abstract: | The dynamic Hartree-Fock theory with point-like interaction is used to calculate the speed of sound and damping factor of a zero-sound wave propagating in a degenerate Fermi gas. This wave propagates slower than Fermi velocity. It is shown, that if the interaction is weak and density is small, then the damping of such a wave can be small. A possibility of discovering such waves in ultracold Fermi gases is discussed. |
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