Abstract
We report two theoretical results for transverse spin waves, which arise in a system with a persistent spin current. Using Fermi liquid theory, we introduce a spin current in the ground state of a polarized or unpolarized Fermi liquid, and we derive the resultant spin waves using the Landau kinetic equation. The resulting spin waves have a ${q}^{1}$ and ${q}^{1/2}$ dispersion to leading order for the polarized and unpolarized systems, respectively.
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