Anisotropic solid dark energy
  In this paper, we study a triad of inhomogeneous scalar fields, known as
"solid", as a source of homogeneous but anisotropic dark energy. By using a
dynamical system approach, we find that anisotropic accelerated solutions can
be realized as attractor points for suitable choices of the parameters of the
model. We complement the dynamical analysis with a numerical solution whose
initial conditions are set in the deep radiation epoch. The model can give an
account of a non-negligible spatial shear within the observational bounds
nowadays, even when the later is set to zero at early times. However, we find
that there is a particular region in the parameter space of the model in which
the Universe isotropizes. The anisotropic attractors, the particular isotropic
region, and a nearly constant equation of state of dark energy very close to $-
1$ are key features of this scenario. Following a similar approach, we also
analyzed the full isotropic version of the model. We find that the solid can be
characterized by a constant equation of state and thus being able to simulate
the behavior of a cosmological constant.
