Elementary Excitations in Quantum Fermi Liquid

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 correcti...

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Bibliographic Details
Main Authors Tsintsadze, Nodar L, Tsintsadze, Levan N
Format Journal Article
LanguageEnglish
Published 02.06.2010
Subjects
Physics - General Physics
Physics - Other Condensed Matter
Physics - Quantum Physics
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Summary: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.
DOI:10.48550/arxiv.1006.0369