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Advances in Astronomy
Volume 2010, Article ID 908640, 23 pages
http://dx.doi.org/10.1155/2010/908640
Review Article

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

1Institute for Theoretical Physics, University of Zurich, 8057 Zurich, Switzerland
2Physics Department, Astronomy Department, and Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA

Received 16 January 2010; Revised 3 May 2010; Accepted 19 May 2010

Academic Editor: Dragan Huterer

Copyright © 2010 Vincent Desjacques and Uroš Seljak. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Primordial non-Gaussianity is a potentially powerful discriminant of the physical mechanisms that generated the cosmological fluctuations observed today. Any detection of significant non-Gaussianity would thus have profound implications for our understanding of cosmic structure formation. The large-scale mass distribution in the Universe is a sensitive probe of the nature of initial conditions. Recent theoretical progress together with rapid developments in observational techniques will enable us to critically confront predictions of inflationary scenarios and set constraints as competitive as those from the Cosmic Microwave Background. In this paper, we review past and current efforts in the search for primordial non-Gaussianity in the large-scale structure of the Universe.