Elementary Excitations in Quantum Fermi Liquid

Details Elementary Excitations in Quantum Fermi Liquid Elementary Excitations in Quantum Fermi Liquid

2010-06-02

arxiv.org/abs/1006.0369v1

Physics

Quantum Physics

Submitted to Physical Review Letters

Scientific paper

Landau's theory of Fermi liquids is generalized by incorporating the de Broglie waves diffraction. A newly derived kinetic equation of the Fermi particles is used to derive a general dispersion relation and the excitation of zero sound is studied. A new mode is found due to the quantum correction. It is shown that the zero sound can exist even in an ideal Fermi gas. We also disclose a new branch of frequency spectrum due to the weak interaction.

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