Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure

Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure

The most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints...

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Main Authors: Michele Liguori, Emiliano Sefusatti, James R. Fergusson, E. P. S. Shellard
Format: Article
Language:English
Published: Hindawi Limited 2010-01-01
Series:Advances in Astronomy
Online Access:http://dx.doi.org/10.1155/2010/980523
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spelling doaj-b4bbb04bdd2a4df9af5d0dd6ac12159c2020-11-24T20:59:01ZengHindawi LimitedAdvances in Astronomy1687-79691687-79772010-01-01201010.1155/2010/980523980523Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale StructureMichele Liguori0Emiliano Sefusatti1James R. Fergusson2E. P. S. Shellard3Department of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKInstitut de Physique Théorique, Commissariat à l'Énergie Atomique, 91191 Gif-sur-Yvette, FranceDepartment of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKDepartment of Applied Mathematics and Theoretical Physics, Centre for Theoretical Cosmology, University of Cambridge, Wilberforce Road, Cambridge CB3 0WA, UKThe most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints on the non-Gaussian parameters in future observations. We review and compare the theoretical and observational problems, current results, and future prospects for the detection of a nonvanishing primordial component in the bispectrum of the Cosmic Microwave Background and large-scale structure, and the relation to specific predictions from different inflationary models.http://dx.doi.org/10.1155/2010/980523
collection DOAJ
language English
format Article
sources DOAJ
author Michele Liguori
Emiliano Sefusatti
James R. Fergusson
E. P. S. Shellard
spellingShingle Michele Liguori
Emiliano Sefusatti
James R. Fergusson
E. P. S. Shellard
Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
Advances in Astronomy
author_facet Michele Liguori
Emiliano Sefusatti
James R. Fergusson
E. P. S. Shellard
author_sort Michele Liguori
title Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
title_short Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
title_full Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
title_fullStr Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
title_full_unstemmed Primordial Non-Gaussianity and Bispectrum Measurements in the Cosmic Microwave Background and Large-Scale Structure
title_sort primordial non-gaussianity and bispectrum measurements in the cosmic microwave background and large-scale structure
publisher Hindawi Limited
series Advances in Astronomy
issn 1687-7969
1687-7977
publishDate 2010-01-01
description The most direct probe of non-Gaussian initial conditions has come from bispectrum measurements of temperature fluctuations in the Cosmic Microwave Background and of the matter and galaxy distribution at large scales. Such bispectrum estimators are expected to continue to provide the best constraints on the non-Gaussian parameters in future observations. We review and compare the theoretical and observational problems, current results, and future prospects for the detection of a nonvanishing primordial component in the bispectrum of the Cosmic Microwave Background and large-scale structure, and the relation to specific predictions from different inflationary models.
url http://dx.doi.org/10.1155/2010/980523
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AT emilianosefusatti primordialnongaussianityandbispectrummeasurementsinthecosmicmicrowavebackgroundandlargescalestructure
AT jamesrfergusson primordialnongaussianityandbispectrummeasurementsinthecosmicmicrowavebackgroundandlargescalestructure
AT epsshellard primordialnongaussianityandbispectrummeasurementsinthecosmicmicrowavebackgroundandlargescalestructure
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