  A well-known feature of the classical monoatomic gas is that its bulk
viscosity is strongly suppressed because the single-particle dispersion is
quadratic. On the other hand, in condensed matter systems the effective
single-particle dispersion is altered by lattice effects and interactions. In
this work, we study the bulk viscosity of one-dimensional Fermi gases with
generic energy-momentum dispersion relations. As an application, viscous
dissipation arising from lattice effects is analyzed for the tight-binding
model. In addition, we investigate how weak interactions affect the bulk
viscosity. Finally, we discuss viscous dissipation in the regime in which the
Fermi gas is not fully equilibrated, as can occur when the system is driven at
frequencies that exceed the rate of fermion backscattering. In this case, the
Fermi gas is described by three bulk viscosities, which we obtain for a generic
single-particle dispersion.
