New Window on Primordial Non-Gaussianity

Pajer, Enrico; Zaldarriaga, Matias

doi:10.1103/PhysRevLett.109.021302

Title: New Window on Primordial Non-Gaussianity

Full Record
Other Related Research

Authors:: Pajer, Enrico; Zaldarriaga, Matias

Publication Date:: 2012-07-13

Sponsoring Org.:: USDOE

OSTI Identifier:: 1102905

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Physical Review Letters

Additional Journal Information:: Journal Volume: 109; Journal Issue: 2; Journal ID: ISSN 0031-9007

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Citation Formats


                    Pajer, Enrico, and Zaldarriaga, Matias. New Window on Primordial Non-Gaussianity.  United States: N. p., 2012. 
Web.  doi:10.1103/PhysRevLett.109.021302.

Copy to clipboard


                    Pajer, Enrico, & Zaldarriaga, Matias. New Window on Primordial Non-Gaussianity.  United States.  https://doi.org/10.1103/PhysRevLett.109.021302

Copy to clipboard


                    Pajer, Enrico, and Zaldarriaga, Matias. Fri .  
"New Window on Primordial Non-Gaussianity".  United States.  https://doi.org/10.1103/PhysRevLett.109.021302.

Copy to clipboard


                    
@article{osti_1102905,

  title        = {New Window on Primordial Non-Gaussianity},

  author       = {Pajer, Enrico and Zaldarriaga, Matias},

  abstractNote = {},

  doi          = {10.1103/PhysRevLett.109.021302},

  journal      = {Physical Review Letters},

  number       = 2,

  volume       = 109,

  place        = {United States},

  year         = {2012},

  month        = {7}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (Publisher)

Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.109.021302

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 49 works

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

CMB contraints on primordial non-Gaussianity from the bispectrum (f{sub NL}) and trispectrum (g{sub NL} and {tau}{sub NL}) and a new consistency test of single-field inflation

Journal Article Smidt, Joseph ; Amblard, Alexandre ; Cooray, Asantha ; ... - Physical Review. D, Particles Fields

We outline the expected constraints on non-Gaussianity from the cosmic microwave background with current and future experiments, focusing on both the third (f{sub NL}) and fourth-order (g{sub NL} and {tau}{sub NL}) amplitudes of the local configuration or non-Gaussianity. The experimental focus is the skewness (two-to-one) and kurtosis (two-to-two and three-to-one) power spectra from weighted maps. In addition to a measurement of {tau}{sub NL} and g{sub NL} with WMAP 5-year data, our study provides the first forecasts for future constraints on g{sub NL}. We describe how these statistics can be corrected for the mask and cut-sky through a window function, bypassingmore »« less
https://doi.org/10.1103/PHYSREVD.81.123007
New shapes of primordial non-Gaussianity from quasi-single field inflation with multiple isocurvatons

Journal Article McAneny, Michael ; Ridgway, Alexander K. - Physical Review D

Here, we smore »« less
Cited by 4
https://doi.org/10.1103/PhysRevD.100.043534

Full Text Available
Impact of secondary non-Gaussianities on the search for primordial non-Gaussianity with CMB maps

Journal Article Serra, Paolo ; Cooray, Asantha - Physical Review. D, Particles Fields

When constraining the primordial non-Gaussianity parameter f{sub NL} with cosmic microwave background anisotropy maps, the bias resulting from the covariance between primordial non-Gaussianity and secondary non-Gaussianities to the estimator of f{sub NL} is generally assumed to be negligible. We show that this assumption may not hold when attempting to measure the primordial non-Gaussianity out to angular scales below a few tens arcminutes with an experiment like Planck, especially if the primordial non-Gaussianity parameter is around the minimum detectability level with f{sub NL} between 5 and 10. In the future, it will be necessary to jointly estimate the combined primordial andmore »« less
https://doi.org/10.1103/PHYSREVD.77.107305
Scale-dependent bias from the primordial non-Gaussianity with a Gaussian-squared field

Journal Article Yokoyama, Shuichiro - Journal of Cosmology and Astroparticle Physics

We investigate the halo bias in the case where the primordial curvature fluctuations, Φ, are sourced from both a Gaussian random field and a Gaussian-squared field, as Φ(x) = φ(x)+ψ(x){sup 2}−(ψ(x){sup 2}ångle, so-called ''ungaussiton model''. We employ the peak-background split formula and find a new scale-dependence in the halo bias induced from the Gaussian-squared field.
https://doi.org/10.1088/1475-7516/2011/11/001
Primordial non-Gaussianities in single field inflationary models with non-trivial initial states

Journal Article Bahrami, Sina ; Flanagan, Éanna É., E-mail: sb933@cornell.edu, E-mail: eef3@cornell.edu - Journal of Cosmology and Astroparticle Physics

We compute the non-Gaussianities that arise in single field, slow roll inflationary models arising from arbitrary homogeneous initial states, as well as subleading contributions to the power spectrum. Non Bunch-Davies vacuum initial states can arise if the transition to the single field, slow roll inflation phase occurs only shortly before observable modes left the horizon. They can also arise from new physics at high energies that has been integrated out. Our general result for the bispectrum exhibits several features that were previously seen in special cases.
https://doi.org/10.1088/1475-7516/2014/10/010

Similar Records