Some Macroscopic Considerations on Motions of Anisotropic Superfluids

We give a Herring-Kittel type of discussion of the nuclear-magnetic-resonance phenomena in the presumed anisotropic superfluid phase of liquid ${}_{}{}^3{}_{}{}^{}\mathrm{He}$. The results agree with Leggett's derivation for high fields in an Anderson-Morel phase but differ fundamentally in other regimes. We observe that all observations so far published suggest that the "$A$" phase is of Anderson-Morel type (probably $L=1\mathrm{}$), and the "$B$" phase of Balian-Werthamer type.