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Signatures of Primordial Non-Gaussianity in the Large-Scale Structure of the Universe

N. Bartolo·S. Matarrese·A. Riotto
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Abstract

We discuss how primordial (e.g. inflationary) non-Gaussianity in the cosmological perturbations is left imprinted in the Large-Scale Structure of the universe. Our findings show that the information on the primordial non-Gaussianity set on super-Hubble scales flows into Post-Newtonian terms, leaving an observable imprint in the Large-Scale Structure. Future high-precision measurements of the statistics of the dark matter density and peculiar velocity fields will allow to pin down the primordial non-Gaussianity, thus representing a tool complementary to studies of the Cosmic Microwave Background anisotropies.

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N. Bartolo, S. Matarrese, A. Riotto. 2005-12-21. Signatures of Primordial Non-Gaussianity in the Large-Scale Structure of the Universe. https://doi.org/10.1088/1475-7516%2F2005%2F10%2F010

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