Axion isocurvature fluctuations with extremely blue spectrum

Details Axion isocurvature fluctuations with extremely blue spectrum Axion isocurvature fluctuations with extremely blue spectrum

2009-04-24

arxiv.org/abs/0904.3800v2

Phys.Rev.D80:023516,2009

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 1 figure, published version

Scientific paper

10.1103/PhysRevD.80.023516

We construct an axion model for generating isocurvature fluctuations with blue spectrum, n_{iso}=2-4, which is suggested by recent analyses of admixture of adiabatic and isocurvature perturbations with independent spectral indices, n_{ad} \ne n_{iso}. The distinctive feature of the model is that the spectrum is blue at large scales while scale invariant at small scales. This is naturally realized by the dynamics of the Peccei-Quinn scalar field.

Affiliated with

Also associated with

No associations

Rating

Axion isocurvature fluctuations with extremely blue spectrum 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 Axion isocurvature fluctuations with extremely blue spectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axion isocurvature fluctuations with extremely blue spectrum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-609267