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Lighting Up Dark Matter Haloes
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The Hunt for Primordial Interactions in the Large-Scale Structures of the Universe

Institute for Theoretical Physics Amsterdam, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
Galaxies 2019, 7(3), 71; https://doi.org/10.3390/galaxies7030071
Received: 31 May 2019 / Revised: 28 June 2019 / Accepted: 7 August 2019 / Published: 8 August 2019
(This article belongs to the Special Issue From Dark Haloes to Visible Galaxies)
The understanding of the primordial mechanism that seeded the cosmic structures we observe today in the sky is one of the major goals in cosmology. The leading paradigm for such a mechanism is provided by the inflationary scenario, a period of violent accelerated expansion in the very early stages of evolution of the universe. While our current knowledge of the physics of inflation is limited to phenomenological models which fit observations, an exquisite understanding of the particle content and interactions taking place during inflation would provide breakthroughs in our understanding of fundamental physics at high energies. In this review, we summarize recent theoretical progress in the modeling of the imprint of primordial interactions in the large-scale structures of the universe. We focus specifically on the effects of such interactions on the statistical distribution of dark-matter halos, providing a consistent treatment of the steps required to connect the correlations generated among fields during inflation all the way to the late-time correlations of halos. View Full-Text
Keywords: inflation; large-scale structure; primordial non-gaussianity; dark-matter halos inflation; large-scale structure; primordial non-gaussianity; dark-matter halos
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Biagetti, M. The Hunt for Primordial Interactions in the Large-Scale Structures of the Universe. Galaxies 2019, 7, 71.

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