For a 2D Fermi liquid, the de Haas-van Alphen amplitudes are derived from the zero-mode sector of a coadjoint-orbit bosonized action, yielding LK-like low-T behavior and a second harmonic A2 that changes sign at high T.
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Bosonized theory of de Haas-van Alphen quantum oscillation in Fermi liquids
For a 2D Fermi liquid, the de Haas-van Alphen amplitudes are derived from the zero-mode sector of a coadjoint-orbit bosonized action, yielding LK-like low-T behavior and a second harmonic A2 that changes sign at high T.