The closet non-Gaussianity of anisotropic Gaussian fluctuations

Astronomy and Astrophysics – Astrophysics

Scientific paper

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Scientific paper

10.1103/PhysRevD.56.4578

In this paper we explore the connection between anisotropic Gaussian fluctuations and isotropic non-Gaussian fluctuations. We first set up a large angle framework for characterizing non-Gaussian fluctuations: large angle non-Gaussian spectra. We then consider anisotropic Gaussian fluctuations in two different situations. Firstly we look at anisotropic space-times and propose a prescription for superimposed Gaussian fluctuations; we argue against accidental symmetry in the fluctuations and that therefore the fluctuations should be anisotropic. We show how these fluctuations display previously known non-Gaussian effects both in the angular power spectrum and in non-Gaussian spectra. Secondly we consider the anisotropic Grischuk-Zel'dovich effect. We construct a flat space time with anisotropic, non-trivial topology and show how Gaussian fluctuations in such a space-time look non-Gaussian. In particular we show how non-Gaussian spectra may probe superhorizon anisotropy.

No associations

LandOfFree

Say what you really think

Search LandOfFree.com for scientists and scientific papers. Rate them and share your experience with other people.

Rating

The closet non-Gaussianity of anisotropic Gaussian fluctuations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The closet non-Gaussianity of anisotropic Gaussian fluctuations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The closet non-Gaussianity of anisotropic Gaussian fluctuations will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFWR-SCP-O-261011

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.