Abstract
The shear viscosity tensor of the A 1-phase of superfluid 3He is calculated at low temperatures and melting pressure, by using the Boltzmann equation approach. The two normal and superfluid components take part in elements of the shear viscosity tensor differently. The interaction between normal and Bogoliubov quasiparticles in the collision integrals is considered in the binary, decay, and coalescence processes. We show that the elements of the shear viscosities η xy , η xz , and η zz are proportional to ( T/ T c) −2. The constant of proportionality is in nearly good agreement with the experimental results of Roobol et al.
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