Particle-Hole Symmetry Violation in Normal Liquid 3He

Author(s): R. S. Fishman and J. A. Sauls
Comments: 9 Journal pages
Journal-ref: Phys. Rev. B 31, 251-259 (1985)

We study the effects of the particle-hole asymmetry terms contained in the Landau-Silin equations on the collective modes of normal 3He. We find that there are no frequency shifts, first order in particle-hole asymmetry terms, of either the zero sound mode or the spin wave modes of normal 3He. Propagating spin waves cannot be excited by zero sound; but, because of particle-hole asymmetry, zero sound can drive small magnetic oscillations with frequencies ( ωzero-sound ωLarmor ) in the combined pulsed-NMR and zero sound experiment proposed by Ketterson.

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