Clustering fossils from the early universe.

  title={Clustering fossils from the early universe.},
  author={Donghui Jeong and Marc Kamionkowski},
  journal={Physical review letters},
  volume={108 25},
Many inflationary theories introduce new scalar, vector, or tensor degrees of freedom that may then affect the generation of primordial density perturbations. Here we show how to search a galaxy (or 21-cm) survey for the imprint of primordial scalar, vector, and tensor fields. These new fields induce local departures to an otherwise statistically isotropic two-point correlation function, or equivalently, nontrivial four-point correlation functions (or trispectra, in Fourier space), that can be… 

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Inflationary tensor fossils deformed by solid matter-scalar field interaction

  • P. M'esz'aros
  • Physics
    Journal of Cosmology and Astroparticle Physics
  • 2019
We study effect of superhorizon tensor perturbations on scalar perturbations, so called effect of clustering fossils, in cosmological model in which inflation is driven by both solid matter and