Textures inHe3−A: Hydrodynamic and magnetic effects in a slab

The Ginzburg-Landau equations are used to analyze the equilibrium configuration of ${}_{}{}^3{}_{}{}^{}\mathrm{He}-A$ in a slab, subject to either a bulk hydrodynamic flow or a uniform tipped magnetic field. Both perturbations can induce an orientational transition from an essentially uniform texture to one with large deformations. The associated phase boundaries are determined both variationally and exactly.