Magnetic field dependence of the Leggett angle,the susceptibility,and the longitudinal nuclear magnetic resonance of3He-B

The magnetic field dependences of the Leggett angle, the susceptibility, the free energy, and the longitudinal NMR frequency of³He-B are calculated from a generalized weak coupling theory. Employing the experimental values for the Landau parametersF ₀ ^a andF ₂ ^a , reasonable agreement with the susceptibility data measured recently by Hoyt, Scholz, and Edwards is obtained. Substantial field dependence of the Leggett angle and the longitudinal NMR frequency is predicted.