Clustering Fossils in Solid Inflation
  In solid inflation the single field non-Gaussianity consistency condition is
violated. As a result, the long tensor perturbation induces observable
clustering fossils in the form of quardupole anisotropy in large scale
structure power spectrum. In this work we revisit the bispectrum analysis for
the scalar-scalar-scalar and tensor-scalar-scalar for the general parameter
space of solid. We consider the parameter space of the model in which the level
of non-Gaussianity generated is consistent with Planck constraints.
Specializing to this allowed range of model parameter, we calculate the
quadrupole anisotropy induced from the long tensor perturbations on the power
spectrum of scalar perturbations. We argue that imprints of clustering fossil
from primordial gravitational waves on large scale structures can be detected
from the future galaxy surveys.
