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Clustering fossils in solid inflation

Akhshik, M ; Sharif University of Technology | 2015

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  1. Type of Document: Article
  2. DOI: 10.1088/1475-7516/2015/05/043
  3. Publisher: Institute of Physics Publishing , 2015
  4. Abstract:
  5. In solid inflation the single field non-Gaussianity consistency condition is violated. As a result, the long tenor perturbation induces observable clustering fossils in the form of quadrupole anisotropy in large scale structure power spectrum. In this work we revisit the bispectrum analysis for the scalar-scalar-scalar and tensor-scalar-scalar bispectrum 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 the 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 the scalar perturbations. We argue that the imprints of clustering fossil from primordial gravitational waves on large scale structures can be detected from the future galaxy surveys
  6. Keywords:
  7. Cosmological perturbation theory ; Ination
  8. Source: Journal of Cosmology and Astroparticle Physics ; Volume 2015, Issue 5 , May , 2015 ; 14757516 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/1475-7516/2015/05/043/meta