Hydrodynamics and macroscopic dynamics of3He-A in high magnetic fields
- 14 July 1977
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 10 (13) , 2337-2350
- https://doi.org/10.1088/0022-3719/10/13/010
Abstract
The linearized hydrodynamics of 3He-A in high magnetic fields is derived from broken symmetries, conservation laws and thermodynamics. Only the transverse part (with respect to the magnetic field) of the spin order parameter is treated as a hydrodynamic variable in a strict sense. A field dependence is found of first sound and a coupling of the longitudinal spin waves (longitudinal NMR resonance) to second and fourth sound. The magnetic dipole-dipole interaction influences the orbit 'wave' spectrum, one branch of which is definitely damped for k=0. The transverse NMR shift remains field-independent, but is no longer equal to the longitudinal NMR.Keywords
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