Field-dependent viscosity in partially polarized normal liquidHe3

We calculate the field dependence of the low-temperature viscosity $\eta \mathrm{}\left(H\right)\mathrm{}$ in normal liquid ${}_{}{}^3{}_{}{}^{}\mathrm{He}$, viewed as a nearly magnetic itinerant-fermion system. In such a picture, we find that $\eta \mathrm{}\left(H\right)\mathrm{}$ should increase with $H$ in low fields and at low temperatures. This is in good agreement with the latest experimental data. Such a finding contradicts both an earlier experiment and the possibility for a metamagnetic transition in liquid ${}_{}{}^3{}_{}{}^{}\mathrm{He}$ proposed by other authors.